# CVE-2025-66412: Angular Stored XSS Vulnerability via SVG Animation, SVG URL and MathML Attributes > Attackers can inject malicious scripts via SVG or MathML attributes due to incomplete security schema, leading to stored XSS in Angular applications. - **Severity:** High 8.5 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`) - **Exploited in the wild:** Not known - **Login needed:** Any signed-in user - **Attackable:** Over the internet - **Victim action needed:** A user has to click or open something - **Fix available:** Yes - **Published:** 1 Dec 2025 - **Updated:** 2 Jun 2026 - **Also known as:** CLSA-2026-1775176150, CLSA-2026-1775176152, CLSA-2026-1775176157, CLSA-2026-1775176159, CLSA-2026-1775176161, CLSA-2026-1775176163, CLSA-2026-1775176167, CLSA-2026-1775176172, CLSA-2026-1775176176, CLSA-2026-1775176184, CLSA-2026-1781225627, CLSA-2026-1781225629, CLSA-2026-1781571270, CLSA-2026-1781571279, CLSA-2026-1781571280, CLSA-2026-1781571281, CLSA-2026-1781657683, CLSA-2026-1781657684, CLSA-2026-1781657685, CLSA-2026-1781657687, CLSA-2026-1781657688, CLSA-2026-1781657695, CLSA-2026-1781657706, CLSA-2026-1783126875, CLSA-2026-1783213288, CLSA-2026-1783213295, CLSA-2026-1783213296, CLSA-2026-1783213297, CLSA-2026-1783213298, CLSA-2026-1783299705, CLSA-2026-1792160915, CLSA-2026-1792160921, CLSA-2026-1792160983, CLSA-2026-1792160987, CLSA-2026-1792161090, CLSA-2026-1792161092, CLSA-2026-1792161095, CLSA-2026-1792161097, CLSA-2026-1792161100, CLSA-2026-1792161102, CLSA-2026-1792161106, CLSA-2026-1792161107, CLSA-2026-1792161112, CLSA-2026-1792161167, CLSA-2026-1792161168, CLSA-2026-1792161169, CLSA-2026-1792161170, CLSA-2026-1792161171, CLSA-2026-1792161172, CLSA-2026-1792161174, CLSA-2026-1792161175, CLSA-2026-1792161176, CLSA-2026-1792161177, CLSA-2026-1792161179, CLSA-2026-1792161181, CLSA-2026-1792161231, CLSA-2026-1792161244, CLSA-2026-1792161249, CLSA-2026-1792161250, CLSA-2026-1792161251, CLSA-2026-1792161252, CLSA-2026-1792161254, CLSA-2026-1792163476, CLSA-2026-1792163479, CLSA-2026-1792163482, CLSA-2026-1792163484, CLSA-2026-1792163486, CLSA-2026-1792163488, CLSA-2026-1792163490, CLSA-2026-1792163493, CLSA-2026-1792163495, CLSA-2026-1792163499, CLSA-2026-1792163557, CLSA-2026-1792163558, CLSA-2026-1792163559, CLSA-2026-1792163560, CLSA-2026-1792163561, CLSA-2026-1792163564, CLSA-2026-1792163565, CLSA-2026-1792163566, CLSA-2026-1792163567, CLSA-2026-1792163568, CLSA-2026-1792163569, CLSA-2026-1792163571, CLSA-2026-1792163622, CLSA-2026-1792163634, CLSA-2026-1792163640, CLSA-2026-1792163641, CLSA-2026-1792163642, CLSA-2026-1792163643, CLSA-2026-1792208084, CLSA-2026-1792208087, CLSA-2026-1792208109, CLSA-2026-1792208110, CLSA-2026-1792208111, CLSA-2026-1792208112, CLSA-2026-1792208113, CLSA-2026-1792208114, CLSA-2026-1792208146, CLSA-2026-1792208147, CLSA-2026-1792208148, CLSA-2026-1792208451, CLSA-2026-1792208455, CLSA-2026-1792208461, CLSA-2026-1792208467, CLSA-2026-1792208474, CLSA-2026-1792208497, CLSA-2026-1792208498, CLSA-2026-1792208499, CLSA-2026-1792208502, CLSA-2026-1792208507, CLSA-2026-1792208508, CLSA-2026-1792208509, CLSA-2026-1792208526, CLSA-2026-1792208534, CLSA-2026-1792208541, CLSA-2026-1792208547, CLSA-2026-1792208550, CLSA-2026-1792208641, CLSA-2026-1792208642, CLSA-2026-1792250192, CLSA-2026-1792250194, CLSA-2026-1792250214, CLSA-2026-1792250215, CLSA-2026-1792250216, CLSA-2026-1792250217, CLSA-2026-1792250218, CLSA-2026-1792250234, CLSA-2026-1792250240, CLSA-2026-1792250471, CLSA-2026-1792250473, CLSA-2026-1792250475, CLSA-2026-1792250482, CLSA-2026-1792250519, CLSA-2026-1792250522, CLSA-2026-1792250528, CLSA-2026-1792250536, CLSA-2026-1792250552, CLSA-2026-1792250557, CLSA-2026-1792250562, CLSA-2026-1792250564, CLSA-2026-1792250601, CLSA-2026-1792250665, CLSA-2026-1792250670, CLSA-2026-1792250789, CLSA-2026-1792250790, CLSA-2026-1792250791, CLSA-2026-1792250798, CLSA-2026-1792251054, CLSA-2026-1792251562, CLSA-2026-1792281034, CLSA-2026-1792281035, CLSA-2026-1792281036, CLSA-2026-1792281037, CLSA-2026-1792281041, CLSA-2026-1792281087, CLSA-2026-1792281088, CLSA-2026-1792281089, CLSA-2026-1792281090, CLSA-2026-1792281092, CLSA-2026-1792281093, CLSA-2026-1792281094, CLSA-2026-1792281095, CLSA-2026-1792281096, CLSA-2026-1792281098, CLSA-2026-1792281133, CLSA-2026-1792281148, CLSA-2026-1792281149, CLSA-2026-1792281150, CLSA-2026-1792281700, CLSA-2026-1792281703, CLSA-2026-1792281719, CLSA-2026-1792281801, CLSA-2026-1792281804, CLSA-2026-1792281807, CLSA-2026-1792281817, CLSA-2026-1792281822, CLSA-2026-1792281825, CLSA-2026-1792281827, CLSA-2026-1792281845, CLSA-2026-1792325300, CLSA-2026-1792325301, CLSA-2026-1792325304, CLSA-2026-1792325305, CLSA-2026-1792325335, CLSA-2026-1792325336, CLSA-2026-1792325338, CLSA-2026-1792325339, CLSA-2026-1792325365, CLSA-2026-1792325371, CLSA-2026-1792325374, CLSA-2026-1792325375, CLSA-2026-1792325376, CLSA-2026-1792325377, CLSA-2026-1792325926, CLSA-2026-1792325927, CLSA-2026-1792325941, CLSA-2026-1792325942, CLSA-2026-1792325970, CLSA-2026-1792326018, CLSA-2026-1792326020, CLSA-2026-1792326024, CLSA-2026-1792326029, CLSA-2026-1792326030, CLSA-2026-1792326031, CLSA-2026-1792326032, CLSA-2026-1792326039, CLSA-2026-1792326045, CLSA-2026-1792326054, CLSA-2026-1792326069, CLSA-2026-1792345160, CLSA-2026-1792345162, CLSA-2026-1792345164, CLSA-2026-1792345199, CLSA-2026-1792345200, CLSA-2026-1792345201, CLSA-2026-1792345202, CLSA-2026-1792345203, CLSA-2026-1792345204, CLSA-2026-1792345205, CLSA-2026-1792345206, CLSA-2026-1792345207, CLSA-2026-1792345240, CLSA-2026-1792345243, CLSA-2026-1792345244, CLSA-2026-1792345630, CLSA-2026-1792345633, CLSA-2026-1792345649, CLSA-2026-1792345683, CLSA-2026-1792345684, CLSA-2026-1792345686, CLSA-2026-1792345691, CLSA-2026-1792345697, CLSA-2026-1792345701, CLSA-2026-1792345706, CLSA-2026-1792345712, CLSA-2026-1792345720, CLSA-2026-1792345756, CLSA-2026-1792345757, CLSA-2026-1792345950, CLSA-2026-1792357208, CLSA-2026-1792357209, CLSA-2026-1792357211, CLSA-2026-1792357213, CLSA-2026-1792357256, CLSA-2026-1792357257, CLSA-2026-1792357258, CLSA-2026-1792357259, CLSA-2026-1792357260, CLSA-2026-1792357261, CLSA-2026-1792357262, CLSA-2026-1792357264, CLSA-2026-1792357296, CLSA-2026-1792357305, CLSA-2026-1792357307, CLSA-2026-1792357308, CLSA-2026-1792357309, CLSA-2026-1792357310, CLSA-2026-1792357764, CLSA-2026-1792357767, CLSA-2026-1792357958, CLSA-2026-1792357959, CLSA-2026-1792357978, CLSA-2026-1792358024, CLSA-2026-1792358025, CLSA-2026-1792358028, CLSA-2026-1792358063, CLSA-2026-1792366526, CLSA-2026-1792366528, CLSA-2026-1792366556, CLSA-2026-1792366557, CLSA-2026-1792366558, CLSA-2026-1792366559, CLSA-2026-1792366560, CLSA-2026-1792366561, CLSA-2026-1792366562, CLSA-2026-1792366589, CLSA-2026-1792366592, CLSA-2026-1792366875, CLSA-2026-1792366877, CLSA-2026-1792366884, CLSA-2026-1792366892, CLSA-2026-1792366894, CLSA-2026-1792366903, CLSA-2026-1792366904, CLSA-2026-1792366909, CLSA-2026-1792366919, CLSA-2026-1792366928, CLSA-2026-1792366934, CLSA-2026-1792366935, CLSA-2026-1792366939, CLSA-2026-1792366942, CLSA-2026-1792366945, CLSA-2026-1792366968, CLSA-2026-1792366974, CLSA-2026-1792367162, CLSA-2026-1792367170, CLSA-2026-1792371580, CLSA-2026-1792371583, CLSA-2026-1792371584, CLSA-2026-1792371587, CLSA-2026-1792371608, CLSA-2026-1792371609, CLSA-2026-1792371610, CLSA-2026-1792371637, CLSA-2026-1792371638, CLSA-2026-1792371639, CLSA-2026-1792371640, CLSA-2026-1792371642, CLSA-2026-1792371996, CLSA-2026-1792371999, CLSA-2026-1792372009, CLSA-2026-1792372023, CLSA-2026-1792372034, CLSA-2026-1792372046, CLSA-2026-1792372049, CLSA-2026-1792372050, CLSA-2026-1792372056, CLSA-2026-1792372075, CLSA-2026-1792372109, CLSA-2026-1792375715, CLSA-2026-1792375716, CLSA-2026-1792375717, CLSA-2026-1792375718, CLSA-2026-1792375720, CLSA-2026-1792375748, CLSA-2026-1792375749, CLSA-2026-1792376050, CLSA-2026-1792376052, CLSA-2026-1792376054, CLSA-2026-1792376055, CLSA-2026-1792376056, CLSA-2026-1792376059, CLSA-2026-1792376063, CLSA-2026-1792376064, CLSA-2026-1792376065, CLSA-2026-1792376069, CLSA-2026-1792376072, CLSA-2026-1792376073, CLSA-2026-1792376085, CLSA-2026-1792376092, CLSA-2026-1792376099, CLSA-2026-1792376110, CLSA-2026-1792376117, CLSA-2026-1792376149, CLSA-2026-1792376211, CLSA-2026-1792376212, CLSA-2026-1792376213, CLSA-2026-1792376337, CLSA-2026-1792376601, CLSA-2026-1792379941, CLSA-2026-1792379942, CLSA-2026-1792379943, CLSA-2026-1792379944, CLSA-2026-1792379973, CLSA-2026-1792379974, CLSA-2026-1792379975, CLSA-2026-1792379976, CLSA-2026-1792379977, CLSA-2026-1792379978, CLSA-2026-1792379979, CLSA-2026-1792379980, CLSA-2026-1792380015, CLSA-2026-1792380016, CLSA-2026-1792380017, CLSA-2026-1792380018, CLSA-2026-1792380380, CLSA-2026-1792380382, CLSA-2026-1792380390, CLSA-2026-1792380403, CLSA-2026-1792380405, CLSA-2026-1792380411, CLSA-2026-1792380433, CLSA-2026-1792380436, CLSA-2026-1792380441, CLSA-2026-1792380443, CLSA-2026-1792380450, CLSA-2026-1792380542, CLSA-2026-1792380673, CLSA-2026-1792380674, CLSA-2026-1792382572, CLSA-2026-1792382575, CLSA-2026-1792382599, CLSA-2026-1792382601, CLSA-2026-1792382619, CLSA-2026-1792382624, CLSA-2026-1792382627, CLSA-2026-1792382628, CLSA-2026-1792382629, CLSA-2026-1792382903, CLSA-2026-1792382907, CLSA-2026-1792382912, CLSA-2026-1792382928, CLSA-2026-1792382942, CLSA-2026-1792382949, CLSA-2026-1792382957, CLSA-2026-1792382958, CLSA-2026-1792382959, CLSA-2026-1792382961, CLSA-2026-1792382965, CLSA-2026-1792382969, CLSA-2026-1792382990, CLSA-2026-1792382991, CLSA-2026-1792382997, CLSA-2026-1792383062, CLSA-2026-1792383192, CLSA-2026-1792383193, CLSA-2026-1792383445, CLSA-2026-1792383446, CLSA-2026-1792383447, CLSA-2026-1792386048, CLSA-2026-1792386049, CLSA-2026-1792386078, CLSA-2026-1792386079, CLSA-2026-1792386080, CLSA-2026-1792386081, CLSA-2026-1792386082, CLSA-2026-1792386084, CLSA-2026-1792386112, CLSA-2026-1792386113, CLSA-2026-1792386411, CLSA-2026-1792386412, CLSA-2026-1792386427, CLSA-2026-1792386433, CLSA-2026-1792386435, CLSA-2026-1792386437, CLSA-2026-1792386444, CLSA-2026-1792386450, CLSA-2026-1792386455, CLSA-2026-1792386467, CLSA-2026-1792386471, CLSA-2026-1792386474, CLSA-2026-1792386482, CLSA-2026-1792386487, CLSA-2026-1792386491, CLSA-2026-1792386520, CLSA-2026-1792386579, CLSA-2026-1792386580, CLSA-2026-1792386712, GHSA-v4hv-rgfq-gp49, UBUNTU-CVE-2025-66412 ## What is CVE-2025-66412? CVE-2025-66412 is a high-severity cross-site scripting vulnerability in angular, published on 1 Dec 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link. ### Official description Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 21.0.2, 20.3.15, and 19.2.17, A Stored Cross-Site Scripting (XSS) vulnerability has been identified in the Angular Template Compiler. It occurs because the compiler's internal security schema is incomplete, allowing attackers to bypass Angular's built-in security sanitization. Specifically, the schema fails to classify certain URL-holding attributes (e.g., those that could contain javascript: URLs) as requiring strict URL security, enabling the injection of malicious scripts. This vulnerability is fixed in 21.0.2, 20.3.15, and 19.2.17. Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation) ## Which versions are affected by CVE-2025-66412? 8 open source packages ship an affected version, including @angular/compiler. It affects 1 product. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `@angular/compiler` | npm | All versions to 18.2.14 | None | | `@angular/compiler` | npm | All versions to 18.2.14 | None | | `@angular/compiler` | npm | From 19.0.0-next.0 | 19.2.17 | | `@angular/compiler` | npm | From 19.0.0-next.0 | 19.2.17 | | `@angular/compiler` | npm | From 20.0.0-next.0 | 20.3.15 | | `@angular/compiler` | npm | From 20.0.0-next.0 | 20.3.15 | | `@angular/compiler` | npm | From 21.0.0-next.0 | 21.0.2 | | `@angular/compiler` | npm | From 21.0.0-next.0 | 21.0.2 | Products: Angular Angular. ## How do I fix CVE-2025-66412? Upgrade @angular/compiler to a fixed version for your release line: 19.2.17, 20.3.15 or 21.0.2. ## Is CVE-2025-66412 being exploited? There is no known exploitation of CVE-2025-66412 in the wild and no public exploit code. ## Other vulnerabilities in angular - [CVE-2026-68945](https://insights.sbomify.com/CVE-2026-68945/): Angular: Cache-Key Ambiguity in HttpTransferCache Leading to Cross-Request Response Reuse and State Poisoning (high 8.8) - [CVE-2026-46417](https://insights.sbomify.com/CVE-2026-46417/): Angular: SSRF via Hostname Hijacking in @angular/platform-server (high 8.8) - [CVE-2026-50168](https://insights.sbomify.com/CVE-2026-50168/): Angular: URL Parser Differential in @angular/platform-server leading to SSRF Allowlist Bypass (high 8.8) - [CVE-2026-54266](https://insights.sbomify.com/CVE-2026-54266/): Angular: Weak 32-Bit Cache Key Hashing in `HttpTransferCache` Leading to Cross-Request Data Leakage and State Poisoning (high 8.8) - [CVE-2026-41423](https://insights.sbomify.com/CVE-2026-41423/): Angular: SSRF via protocol-relative and backslash URLs in Angular Platform-Server (high 8.7) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2025-66412 and fix it if it is affected. What it is: CVE-2025-66412 is a high-severity cross-site scripting vulnerability in angular, published on 1 Dec 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link. Exploitation: There is no known exploitation of CVE-2025-66412 in the wild and no public exploit code. Affected packages and fixed versions: - @angular/compiler (npm): affected all versions up to 18.2.14; no fix listed - @angular/compiler (npm): affected all versions up to 18.2.14; no fix listed - @angular/compiler (npm): affected from 19.0.0-next.0; fixed in 19.2.17 - @angular/compiler (npm): affected from 19.0.0-next.0; fixed in 19.2.17 - @angular/compiler (npm): affected from 20.0.0-next.0; fixed in 20.3.15 - @angular/compiler (npm): affected from 20.0.0-next.0; fixed in 20.3.15 - @angular/compiler (npm): affected from 21.0.0-next.0; fixed in 21.0.2 - @angular/compiler (npm): affected from 21.0.0-next.0; fixed in 21.0.2 Task: 1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies. 2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it. 3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead. 4. Run the tests and summarise what changed and why. 5. If nothing in the project is affected, say so and change nothing. Reference: https://insights.sbomify.com/CVE-2025-66412/ (Markdown: https://insights.sbomify.com/CVE-2025-66412/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2025-66412 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-66412 - OSV: https://osv.dev/vulnerability/CVE-2025-66412 --- From sbomify Insights: https://insights.sbomify.com/CVE-2025-66412/ Summaries are generated and may contain mistakes; the official description above is the record.