CVE-2026-77439: Privilege Escalation (CVSS 8.8)

Description

Immich is a self-hosted photo and video management solution. Prior to 3.0.3, an authenticated user with editor access to a shared album can change the existing owner's role because album member role updates do not protect the owner from modification. By demoting the owner and then promoting themselves, an editor can take ownership of the album, remove the original owner, and delete the album. This vulnerability is fixed in version 3.0.3.

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CVSS v3.1 Score

8.8

HIGH

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

EPSS — Exploit Prediction

0.0060

Probability of exploitation

0.49%

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-269 CWE-269

CWE-639 CWE-639

References

Other References

https://github.com/immich-app/immich/commit/84dff19ca9a467752d848ff54763d62c04ebf960 https://github.com/immich-app/immich/pull/29883 https://github.com/immich-app/immich/releases/tag/v3.0.3 https://github.com/immich-app/immich/security/advisories/GHSA-c9mf-h82r-8p4j https://github.com/immich-app/immich/security/advisories/GHSA-c9mf-h82r-8p4j

Frequently Asked Questions

What is CVE-2026-77439? +

Immich is a self-hosted photo and video management solution. Prior to 3.0.3, an authenticated user with editor access to a shared album can change the existing owner's role because album member role updates do not protect the owner from modification. By demoting the owner and then promoting themselves, an editor can take ownership of the album, remove the original owner, and delete the album. This vulnerability is fixed in version 3.0.3. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-77439? +

CVE-2026-77439 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0060, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-77439? +

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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