CVE-2026-85231

MEDIUM
Published October 16, 2026

A flaw was found in libtirpc. An authenticated remote attacker could exploit this vulnerability by sending oversized wrapped data requests to an RPC (Remote Procedure Call) service configured with RPCSEC_GSS (Remote Procedure Call Security-Generic Security Service) integrity or privacy. This can...

Full CISO analysis pending enrichment.

What systems are affected?

PackageEcosystemVulnerable RangePatched
MLflowpip—No patch
28.6KOpenSSF 5.4695 dependentsPushed 5d ago20% patched~68d to patchFull package profile →
libtirpc——No patch
openshift/ose-rhel-coreos-8——No patch
openshift/ose-rhel-coreos-9——No patch

How severe is it?

CVSS 3.1
6.5 / 10
EPSS
N/A
Exploitation Status
No known exploitation
Sophistication
N/A

What is the attack surface?

AVACPRUISCIA
AVNetwork
ACLow
PRLow
UINone
SUnchanged
CNone
INone
AHigh

What should I do?

No patch available

Monitor for updates. Consider compensating controls or temporary mitigations.

Which compliance frameworks are affected?

Compliance analysis pending. Sign in for full compliance mapping when available.

Frequently Asked Questions

What is CVE-2026-85231?

A flaw was found in libtirpc. An authenticated remote attacker could exploit this vulnerability by sending oversized wrapped data requests to an RPC (Remote Procedure Call) service configured with RPCSEC_GSS (Remote Procedure Call Security-Generic Security Service) integrity or privacy. This can lead to unbounded memory allocation, resulting in a Denial of Service (DoS) by exhausting system resources and causing the service to become unstable or terminate.

Is CVE-2026-85231 actively exploited?

No confirmed active exploitation of CVE-2026-85231 has been reported, but organizations should still patch proactively.

How to fix CVE-2026-85231?

No patch is currently available. Monitor vendor advisories for updates.

What is the CVSS score for CVE-2026-85231?

CVE-2026-85231 has a CVSS v3.1 base score of 6.5 (MEDIUM).

What are the technical details?

Original Advisory

A flaw was found in libtirpc. An authenticated remote attacker could exploit this vulnerability by sending oversized wrapped data requests to an RPC (Remote Procedure Call) service configured with RPCSEC_GSS (Remote Procedure Call Security-Generic Security Service) integrity or privacy. This can lead to unbounded memory allocation, resulting in a Denial of Service (DoS) by exhausting system resources and causing the service to become unstable or terminate.

Weaknesses (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling: The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

  • [Requirements] Clearly specify the minimum and maximum expectations for capabilities, and dictate which behaviors are acceptable when resource allocation reaches limits.
  • [Architecture and Design] Limit the amount of resources that are accessible to unprivileged users. Set per-user limits for resources. Allow the system administrator to define these limits. Be careful to avoid CWE-410.

Source: MITRE CWE corpus.

CVSS Vector

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

References

Timeline

Published
October 16, 2026
Last Modified
November 6, 2026
First Seen
November 6, 2026

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