# CVE-2026-77310: jackson-databind: Incomplete fix for CVE-2026-54514: eager DNS resolution (SSRF) still present in InetAddress deserialization > Attackers can trigger DNS-based SSRF and internal host enumeration via deserialization of InetAddress objects in jackson-databind. - **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 24 Aug 2026 - **Updated:** 25 Aug 2026 - **Also known as:** CLEANSTART-2026-GE41148, CLEANSTART-2026-HU97790, CLEANSTART-2026-LY52990, CLEANSTART-2026-MD90103, CLEANSTART-2026-OD02646, CLEANSTART-2026-QT94444, CLEANSTART-2026-VJ66096, CLEANSTART-2026-XO28910, CLSA-2026-1793185359, ECHO-2afc-8cf6-309b, GHSA-vvgp-rfg2-7rr6, MINI-22hw-g3qj-8rvc, MINI-24fr-xf8q-hw44, MINI-255m-w579-85rc, MINI-2fp4-jmf5-9q5g, MINI-2g3p-m99r-r879, MINI-2qmg-2mp3-q7pq, MINI-2xhv-fxcj-3w66, MINI-34mw-5w5m-6gv3, MINI-35cm-mm5v-qvgx, MINI-3r5p-f8h3-p72p, MINI-3xm2-qgm6-7vr5, MINI-42jr-x2xc-3mqr, MINI-437c-wgq6-8v77, MINI-4r58-3j83-j4px, MINI-4r9v-66f5-8m24, MINI-4vm2-qch4-fq32, MINI-4vp6-xfhr-prx8, MINI-4x2m-ppcx-v659, MINI-55rh-pg85-4m2m, MINI-5885-c9rh-j426, MINI-5vx4-6p3v-7xfh, MINI-5wqf-9rh2-hvpx, MINI-5wwr-3vc5-5xwh, MINI-5xx2-rc7c-5hw7, MINI-63pg-fh49-f88c, MINI-6mqr-63pc-2qmm, MINI-6vrq-73g2-8p38, MINI-6wxm-8w99-cg4v, MINI-6xj9-gcrj-fx3m, MINI-777r-fr8x-wjfj, MINI-7cwg-pp9w-qvq4, MINI-7f6p-mcxw-p762, MINI-7gqj-cxqf-w546, MINI-7j7r-xp45-pxc8, MINI-7jq9-hr62-pjr4, MINI-82rv-j3rg-pw3q, MINI-8383-4p6j-6h4r, MINI-843g-5cpw-4g6g, MINI-86xm-m827-4pqj, MINI-8f4q-jxwf-473r, MINI-8g43-jx8q-f8c5, MINI-8v68-r66w-x225, MINI-8x9r-xcqm-w9h8, MINI-9p97-rrjh-m788, MINI-9q9c-4c8j-hc9w, MINI-9r8h-r6g4-xhjj, MINI-9wm6-pj96-4rhh, MINI-c3jg-vh2j-jjjh, MINI-c553-wx7r-hw8r, MINI-c5ww-c3fh-3vqj, MINI-ccm7-845m-cfp6, MINI-cfvp-r4qq-7388, MINI-cmfx-22v7-gcf4, MINI-cq66-hp8w-gwxq, MINI-cvcm-48px-rvx4, MINI-f2fg-2hvq-98gg, MINI-f7hp-fqpw-65rr, MINI-f9h2-3crw-6m36, MINI-fx49-9wqr-g95g, MINI-g3cg-xwmc-c57m, MINI-gh49-5cjc-jqg6, MINI-gp2w-3xwm-8v36, MINI-gq3j-fr44-p448, MINI-grfv-f6j7-336j, MINI-gvp8-mxf6-9655, MINI-gx95-q4v3-5h38, MINI-h38f-xmfv-gfg7, MINI-h5rw-x5pg-2p5r, MINI-hm6c-wh4j-v2x7, MINI-hrxr-pvrw-74w8, MINI-j3xf-5jq5-322x, MINI-j5fr-j6xg-3779, MINI-j8mh-j2xj-xx8g, MINI-j97m-wqr7-mc97, MINI-j9qg-xjxv-pwq9, MINI-jffj-r945-wg3w, MINI-jqff-hwrg-jjg8, MINI-jqxc-g7h7-pjg2, MINI-jxwc-m4c4-453x, MINI-m4h6-768w-g55m, MINI-m97w-pgq8-w2xv, MINI-mjhw-4rx6-7c85, MINI-mv4j-rg8g-9r6c, MINI-p39h-wxg6-3x2v, MINI-p67m-4f88-c5x2, MINI-p77c-6x79-24r9, MINI-pf26-m59v-6pf5, MINI-pp82-r4fg-qvhg, MINI-pv59-fx3g-mjq6, MINI-q6m4-4hfh-2gfr, MINI-qf4g-gx9q-v7ff, MINI-qh3m-3x87-hp48, MINI-qhxm-w8vh-243v, MINI-qr24-r7mm-vc4m, MINI-qr6m-47cm-24h9, MINI-qr6m-hg55-2434, MINI-r2cw-4789-wfg7, MINI-r627-3cxw-p5h2, MINI-r874-m46f-5q2h, MINI-rf7x-xm2p-vc77, MINI-rj8v-68hg-8pgq, MINI-rjp9-qcv7-6rj4, MINI-rjrf-crc3-4326, MINI-rm57-rcr4-2g64, MINI-rqcq-p5mf-qjpr, MINI-rr97-26r4-7622, MINI-rv6g-2536-56r3, MINI-rvp5-4q58-wqv5, MINI-vvwr-rvj4-mf86, MINI-vxh8-5c4p-g648, MINI-w889-xccm-q6g6, MINI-w8xf-pjwc-cqfh, MINI-w95j-w5hm-5j5w, MINI-whwf-8p59-v64m, MINI-wj9v-7r76-gcpv, MINI-wmfj-q966-hxcc, MINI-wph4-pfgr-2fw6, MINI-x28w-hr28-h4q3, MINI-x4g8-pv74-78cg, MINI-x6v3-h3gc-c39r, MINI-xf2p-fjx7-qqf3, MINI-xh37-5ccj-9rq7, MINI-xmrr-5jgx-95q9, MINI-xpvc-5wjj-fh8p, ROOT-APP-MAVEN-CVE-2026-77310, UBUNTU-CVE-2026-77310 ## What is CVE-2026-77310? CVE-2026-77310 is a medium-severity server-side request forgery vulnerability in com.fasterxml.jackson.core:jackson-databind, published on 24 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim. ### Official description jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. Prior to versions 2.18.9, 2.21.5, 2.22.1, 3.1.5, and 3.2.1 on their respective release lines, the java.net.InetAddress branch of FromStringDeserializer.Std._deserialize() calls InetAddress.getByName() on attacker-controlled input, causing eager DNS resolution during deserialization and enabling DNS-based server-side request forgery and internal-host enumeration. This issue is fixed in versions 2.18.9, 2.21.5, 2.22.1, 3.1.5, and 3.2.1. Weakness: CWE-918 (Server-Side Request Forgery) ## Which versions are affected by CVE-2026-77310? 10 open source packages ship an affected version, including com.fasterxml.jackson.core:jackson-databind and tools.jackson.core:jackson-databind. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `com.fasterxml.jackson.core:jackson-databind` | Maven | From 2.0.0 | 2.18.9 | | `com.fasterxml.jackson.core:jackson-databind` | Maven | From 2.0.0 | 2.18.9 | | `com.fasterxml.jackson.core:jackson-databind` | Maven | From 2.19.0 | 2.21.5 | | `com.fasterxml.jackson.core:jackson-databind` | Maven | From 2.19.0 | 2.21.5 | | `com.fasterxml.jackson.core:jackson-databind` | Maven | From 2.22.0 | 2.22.1 | | `com.fasterxml.jackson.core:jackson-databind` | Maven | From 2.22.0 | 2.22.1 | | `tools.jackson.core:jackson-databind` | Maven | From 3.0.0 | 3.1.5 | | `tools.jackson.core:jackson-databind` | Maven | From 3.0.0 | 3.1.5 | | `tools.jackson.core:jackson-databind` | Maven | From 3.2.0 | 3.2.1 | | `tools.jackson.core:jackson-databind` | Maven | From 3.2.0 | 3.2.1 | ## How do I fix CVE-2026-77310? Upgrade com.fasterxml.jackson.core:jackson-databind to a fixed version for your release line: 2.18.9, 2.21.5 or 2.22.1. ## Is CVE-2026-77310 being exploited? There is no known exploitation of CVE-2026-77310 in the wild and no public exploit code. ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2026-77310 and fix it if it is affected. What it is: CVE-2026-77310 is a medium-severity server-side request forgery vulnerability in com.fasterxml.jackson.core:jackson-databind, published on 24 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim. Exploitation: There is no known exploitation of CVE-2026-77310 in the wild and no public exploit code. Affected packages and fixed versions: - com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.0.0; fixed in 2.18.9 - com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.0.0; fixed in 2.18.9 - com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.19.0; fixed in 2.21.5 - com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.19.0; fixed in 2.21.5 - com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.22.0; fixed in 2.22.1 - com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.22.0; fixed in 2.22.1 - tools.jackson.core:jackson-databind (Maven): affected from 3.0.0; fixed in 3.1.5 - tools.jackson.core:jackson-databind (Maven): affected from 3.0.0; fixed in 3.1.5 - tools.jackson.core:jackson-databind (Maven): affected from 3.2.0; fixed in 3.2.1 - tools.jackson.core:jackson-databind (Maven): affected from 3.2.0; fixed in 3.2.1 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-2026-77310/ (Markdown: https://insights.sbomify.com/CVE-2026-77310/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2026-77310 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-77310 - OSV: https://osv.dev/vulnerability/CVE-2026-77310 --- From sbomify Insights: https://insights.sbomify.com/CVE-2026-77310/ Summaries are generated and may contain mistakes; the official description above is the record.