Contao is an Open Source CMS. From version 4.0.0 to before 4.13.57, before 5.3.42, and before 5.6.5, it is possible to inject code into the template output that will be executed in the browser in the front end and back end. This issue has been patched in versions 4.13.57, 5.3.42, and 5.6.5. A workaround for this issue involves not using the affected templates or patch them manually.
CVE-2025-65961
This medium-severity CVE scores 4.8 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 96% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 4.8
- EG Score
- 4.8(medium)
- EG Risk
- 22(Track)EG Risk 22/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity48% × 45%Exploitation0% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS
- 4.2%
- KEV
- Not listed
Published
November 25, 2025
Last Modified
June 17, 2026
References (2)
- security-advisories@githubhttps://contao.org/en/security-advisories/cross-site-scripting-in-templates
- security-advisories@githubhttps://github.com/contao/contao/security/advisories/GHSA-68q5-78xp-cwwc
Affected Packages
(1 across 1 ecosystem)
Packagist(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| contao/core-bundle | 5.4.0 ... 5.6.4 (48 versions) | 5.6.5 | — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 10× in last 7d / 44× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-23 03:01 UTCEG score recompute▲ 1.50
- 2026-07-22 14:08 UTCEPSS rescore
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- 2026-07-06 09:11 UTCOSV refresh
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- 2026-06-24 10:00 UTCNVD updateCVSS v3 → 4.8 · severity → MEDIUM
- 2026-06-23 21:32 UTCEPSS rescore
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- 2026-06-17 21:14 UTCOSV refresh
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- 2026-05-31 00:16 UTCEPSS rescore
- 2026-05-31 00:16 UTCEPSS rescore
- 2026-05-29 18:52 UTCEG score recompute
- 2026-05-29 13:44 UTCEPSS rescore
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2025-65961?
When was CVE-2025-65961 disclosed?
Is CVE-2025-65961 actively exploited?
What is the CVSS score of CVE-2025-65961?
How do I remediate CVE-2025-65961?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-65961
Is Your Infrastructure Affected by CVE-2025-65961?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.