TI-2026-42552 Aliases CVE-2026-59675

Rancher Audit-Log Middleware Unauthenticated Memory Exhaustion Denial of Service

MEDIUM 40CWE-770Published 2026-08-05 · Updated 2026-08-05

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-770.

Summary

When API audit logging is enabled, the middleware reads the entire HTTP request body into memory without enforcing a size limit on login endpoints. Because the audit middleware is positioned earlier in the handler chain than Rancher's APIBodyLimitingHandler, the body-size cap (default 1 MiB) is bypassed for requests that pass through the audit copyReqBody path. An unauthenticated attacker can send arbitrarily large request bodies to the public login endpoints, causing the Rancher Manager server process to allocate memory proportional to the supplied body size. With just a few concurrent connections, this can exhaust available memory and terminate the Rancher Manager plane process, making the Rancher API and UI unavailable and interrupting management of all downstream clusters.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00557 46th percentileScored 2026-11-07

Fix Fixed Rancher (SUSE): 2.14.4, 2.13.8, 2.12.12

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
SUSE	Rancher	2.14.0 to before 2.14.4; 2.13.0 to before 2.13.8; 2.12.0 to before 2.12.12	2.14.4, 2.13.8, 2.12.12	Patch available	CNA

Rancher VendorSUSE Affected 2.14.0 to before 2.14.4; 2.13.0 to before 2.13.8; 2.12.0 to before 2.12.12 Fixed in 2.14.4, 2.13.8, 2.12.12 Patch available CNA

Remediation

Fix · CNA Rancher (SUSE) Fixed in 2.14.4, 2.13.8, 2.12.12

Timeline

2026-10-02 Threatist record created from CVE-2026-59675

References

Other 2

TI-2016-03560 Unspecified vulnerability in Adobe Flash Player 21.0.0.242 and earlier allows remote… KEVCVSS 3.1CRITICAL 9.8
TI-2016-03506 Adobe Flash Player 21.0.0.226 and earlier allows remote attackers to execute arbitrary… KEVCVSS 3.1CRITICAL 9.8
TI-2016-02888 Unspecified vulnerability in Oracle Java SE 6u113, 7u99, and 8u77; Java SE Embedded 8u77… KEVCVSS 3.1CRITICAL 9.8
TI-2015-04302 Use-after-free vulnerability in the BitmapData class in the ActionScript 3 (AS3)… KEVCVSS 3.1CRITICAL 9.8
TI-2015-04301 Use-after-free vulnerability in the DisplayObject class in the ActionScript 3 (AS3)… KEVCVSS 3.1CRITICAL 9.8
TI-2015-04298 Use-after-free vulnerability in the ByteArray class in the ActionScript 3 (AS3)… KEVCVSS 3.1CRITICAL 9.8

See all 1331 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences