CVE-2026-85605: Auth Bypass (CVSS 5.3)

Description

Slink before 1.12.3 fails to properly authorize access to image comment endpoints, allowing unauthenticated attackers to read comment threads via GET /api/image/{imageId}/comments and server-sent-events subscriptions. Attackers who obtain image IDs out of band can retrieve full comment threads on public images and subscribe to live comment updates without authentication or authorization checks.

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CVSS v3.1 Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS — Exploit Prediction

0.0039

Probability of exploitation

0.33%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-862 Missing Authorization

References

Other References

https://github.com/andrii-kryvoviaz/slink https://github.com/andrii-kryvoviaz/slink/commit/221315b1ac51 https://github.com/andrii-kryvoviaz/slink/commit/fe04a7dffe8a7ed2f834f7364281a9414e394600 https://github.com/andrii-kryvoviaz/slink/releases/tag/v1.12.3 https://github.com/andrii-kryvoviaz/slink/security/advisories/GHSA-hxx4-4hwq-8258 https://www.vulncheck.com/advisories/slink-before-1.12.3-missing-authorization-on-image-comment-endpoints

Frequently Asked Questions

What is CVE-2026-85605? +

Slink before 1.12.3 fails to properly authorize access to image comment endpoints, allowing unauthenticated attackers to read comment threads via GET /api/image/{imageId}/comments and server-sent-events subscriptions. Attackers who obtain image IDs out of band can retrieve full comment threads on public images and subscribe to live comment updates without authentication or authorization checks. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2026-85605? +

CVE-2026-85605 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0039, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-85605? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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