CVE-2026-55149 Vouch Proxy - Denial of Service

Vouch Proxy < 0.48.0 contains a denial of service caused by unbounded allocation from attacker-controlled multipart cookie name in cookie parsing, letting remote attackers crash the authentication proxy without valid session, exploit requires no authentication.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.72% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
15 September 2026
Updated
15 October 2026
Weakness
CWE-789

Vendor fix

Upgrade to version 0.48.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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