CVE-2026-24845
CVE-2026-24845 is a medium-severity vulnerability in Chainguard Malcontent with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-522.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- EPSS exploit prediction: 0% (26th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-4945
- Weakness: CWE-522
- Affected product: Chainguard Malcontent
- Published:
- Last modified:
Description
malcontent discovers supply-chain compromises through. context, differential analysis, and YARA. Starting in version 0.10.0 and prior to version 1.20.3, malcontent could be made to expose Docker registry credentials if it scanned a specially crafted OCI image reference. malcontent uses google/go-containerregistry for OCI image pulls, which by default uses the Docker credential keychain. A malicious registry could return a `WWW-Authenticate` header redirecting token authentication to an attacker-controlled endpoint, causing credentials to be sent to that endpoint. Version 1.20.3 fixes the issue by defaulting to anonymous auth for OCI pulls.
Frequently asked questions
- What is CVE-2026-24845?
- malcontent discovers supply-chain compromises through. context, differential analysis, and YARA. Starting in version 0.10.0 and prior to version 1.20.3, malcontent could be made to expose Docker registry credentials if it scanned a specially crafted OCI image reference. malcontent uses google/go-containerregistry for OCI image pulls, which by default uses the Docker credential keychain. A malicious registry could return a `WWW-Authenticate` header redirecting token authentication to an attacker-controlled endpoint, causing credentials to be sent to that endpoint. Version 1.20.3 fixes the issue by defaulting to anonymous auth for OCI pulls.
- How severe is CVE-2026-24845?
- CVE-2026-24845 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2026-24845 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-24845?
- CVE-2026-24845 affects Chainguard Malcontent. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-24845?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-24845 have an EU (EUVD) identifier?
- Yes. CVE-2026-24845 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-4945.
- When was CVE-2026-24845 published?
- CVE-2026-24845 was published on 2026-01-29 and last updated on 2026-06-17.
References
- https://github.com/chainguard-dev/malcontent/commit/538ed00cdc639d687a4bd1e843a2be0428a3b3e7
- https://github.com/chainguard-dev/malcontent/security/advisories/GHSA-9m43-p3cx-w8j5
Affected products (1)
- cpe:2.3:a:chainguard:malcontent:*:*:*:*:*:*:*:*
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