# CVE-2021-29040: Liferay Portal and Liferay DXP Reveals Data via Overly Verbose Error Messages > Remote attackers can extract sensitive information from verbose JSON web service error messages to facilitate further attacks. - **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:** 16 May 2021 - **Updated:** 9 Jul 2026 - **Also known as:** GHSA-87x7-pwrx-jch7 ## What is CVE-2021-29040? CVE-2021-29040 is a medium-severity vulnerability in Liferay Digital Experience Platform, published on 16 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim. ### Official description The JSON web services in Liferay Portal 7.3.4 and earlier, and Liferay DXP 7.0 before fix pack 97, 7.1 before fix pack 20 and 7.2 before fix pack 10 may provide overly verbose error messages, which allows remote attackers to use the contents of error messages to help launch another, more focused attacks via crafted inputs. Weakness: CWE-209 (Generation of Error Message Containing Sensitive Information) ## Which versions are affected by CVE-2021-29040? 8 open source packages ship an affected version, including com.liferay.portal:release.dxp.bom and com.liferay.portal:release.portal.bom. It affects 2 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `com.liferay.portal:release.dxp.bom` | Maven | All versions | 7.0.10.fp97 | | `com.liferay.portal:release.dxp.bom` | Maven | All versions | 7.0.10.fp97 | | `com.liferay.portal:release.dxp.bom` | Maven | From 7.1.0 | 7.1.10.fp20 | | `com.liferay.portal:release.dxp.bom` | Maven | From 7.1.0 | 7.1.10.fp20 | | `com.liferay.portal:release.dxp.bom` | Maven | From 7.2.0 | 7.2.10.fp10 | | `com.liferay.portal:release.dxp.bom` | Maven | From 7.2.0 | 7.2.10.fp10 | | `com.liferay.portal:release.portal.bom` | Maven | All versions | 7.3.5 | | `com.liferay.portal:release.portal.bom` | Maven | All versions | 7.3.5 | Products: Liferay Digital Experience Platform, Liferay Liferay Portal. ## How do I fix CVE-2021-29040? Upgrade com.liferay.portal:release.dxp.bom to a fixed version for your release line: 7.0.10.fp97, 7.1.10.fp20 or 7.2.10.fp10. ## Is CVE-2021-29040 being exploited? There is no known exploitation of CVE-2021-29040 in the wild and no public exploit code. ## Other vulnerabilities in Liferay Digital Experience Platform - [CVE-2024-8980](https://insights.sbomify.com/CVE-2024-8980/): Liferay Portal and Liferay DXP Vulnerable to CSRF in the Script Console (critical 9.6) - [CVE-2023-42496](https://insights.sbomify.com/CVE-2023-42496/): Liferay Portal and Liferay DXP vulnerable to reflected Cross-site Scripting (critical 9.6) - [CVE-2023-42498](https://insights.sbomify.com/CVE-2023-42498/): Liferay Portal Language Override edit screen and Liferay DXP vulnerable to reflected Cross-site Scripting (critical 9.6) - [CVE-2024-25147](https://insights.sbomify.com/CVE-2024-25147/): Liferay Portal and Liferay DXP vulnerable to Cross-site Scripting (critical 9.6) - [CVE-2024-26269](https://insights.sbomify.com/CVE-2024-26269/): Liferay Portal Frontend JS module's portlet.js and Liferay DXP vulnerable to Cross-site Scripting (critical 9.6) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2021-29040 and fix it if it is affected. What it is: CVE-2021-29040 is a medium-severity vulnerability in Liferay Digital Experience Platform, published on 16 May 2021. 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-2021-29040 in the wild and no public exploit code. Affected packages and fixed versions: - com.liferay.portal:release.dxp.bom (Maven): affected all versions; fixed in 7.0.10.fp97 - com.liferay.portal:release.dxp.bom (Maven): affected all versions; fixed in 7.0.10.fp97 - com.liferay.portal:release.dxp.bom (Maven): affected from 7.1.0; fixed in 7.1.10.fp20 - com.liferay.portal:release.dxp.bom (Maven): affected from 7.1.0; fixed in 7.1.10.fp20 - com.liferay.portal:release.dxp.bom (Maven): affected from 7.2.0; fixed in 7.2.10.fp10 - com.liferay.portal:release.dxp.bom (Maven): affected from 7.2.0; fixed in 7.2.10.fp10 - com.liferay.portal:release.portal.bom (Maven): affected all versions; fixed in 7.3.5 - com.liferay.portal:release.portal.bom (Maven): affected all versions; fixed in 7.3.5 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-2021-29040/ (Markdown: https://insights.sbomify.com/CVE-2021-29040/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2021-29040 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-29040 - OSV: https://osv.dev/vulnerability/CVE-2021-29040 --- From sbomify Insights: https://insights.sbomify.com/CVE-2021-29040/ Summaries are generated and may contain mistakes; the official description above is the record.