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Fencer Vulns
high 7.1

CVE-2024-56529 json

Mailcow through 2024-11b has a session fixation vulnerability in the web panel.

published 2025-01-28 21 mo ago modified 2026-06-17 4 mo ago also EUVD-2024-53178

cvss
7.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 37%
public exploits
0
none known

Summary

Mailcow through 2024-11b has a session fixation vulnerability in the web panel. It allows remote attackers to set a session identifier when HSTS is disabled on a victim's browser. After a user logs in, they are authenticated and the session identifier is valid. Then, a remote attacker can access the victim's web panel with the same session identifier.

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
21 mo ago

Exploit prediction

0.43% chance of exploitation in the next 30 days, higher than 37% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N
CNA 3.1 7.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.