TI-2026-69842 Aliases CVE-2026-107885

OpenPrinting CUPS resource exhaustion in job submission timeout handling

MEDIUM 58CWE-770Published 2026-10-09 · Updated 2026-10-09

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Partial Red Hat: 1 fixed, 5 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-770.

Summary

OpenPrinting CUPS through 2.4.20 has a resource exhaustion flaw in its job timeout handling, CWE-770. While any client connection has a Send-Document operation in flight, the scheduler skips timeout processing for all pending jobs, including unrelated incomplete ones. A low-privilege local user who can reach the IPP service can hold an incomplete HTTP request open to block their expiry, and a proof-of-concept exploit is linked in the references. Where job creation is allowed, incomplete jobs can accumulate until MaxJobs is exhausted and legitimate print submissions are rejected.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

OpenPrinting CUPS through 2.4.20 contains a resource-exhaustion vulnerability in the submission-timeout handling of cupsdCheckJobs(). The scheduler suppresses timeout processing for all pending jobs whenever any client connection has an in-flight Send-Document operation, without matching that connection to the job being examined. A client allowed to reach the IPP service can hold an incomplete HTTP request containing parsed Send-Document headers before operation authorization, preventing unrelated incomplete jobs from expiring. Where Create-Job submission is allowed, incomplete jobs can accumulate until MaxJobs is exhausted and further legitimate print submissions are rejected. The suppression ends when the held connection closes.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00147 3rd percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Partial Red Hat: 1 advisoryRed Hat: 1 fixed, 5 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
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
OpenPrinting	CUPS	up to 2.4.20	—	No fix listed	CNA

CUPS VendorOpenPrinting Affected up to 2.4.20 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:openprinting:cups::::::::	before 2.4.21	Vulnerable	OpenPrinting

cpe:2.3:a:openprinting:cups:*:*:*:*:*:*:*:* Versions before 2.4.21 Vulnerable ·OpenPrinting

Remediation

The sources list no fixed version for OpenPrinting CUPS. Red Hat fixes Red Hat Hardened Images in RHSA-2026:81410. Red Hat lists Red Hat Enterprise Linux 7, 8, 9 and 10 as affected with no fix available, and Red Hat Enterprise Linux 6 as affected with no fix planned.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Red Hat 1 advisory

RHSA-2026:81410 Released 2026-10-12 · Red Hat rating Moderate
Red Hat Hardened Images RPMs Security Update
- Red Hat Hardened Images cups-2.4.19-4.5.hum1@aarch64, cups-2.4.19-4.5.hum1@s390x, cups-2.4.19-4.5.hum1@src +22

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Enterprise Linux 10	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 6	Affected	No fix planned: Out of support scope
Red Hat Enterprise Linux 7	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 8	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 9	Affected	No fix yet: Fix deferred
Red Hat Hardened Images	Fixed	RHSA-2026:81410

Timeline

2026-10-09 Threatist record created from CVE-2026-107885
2026-10-10 Affected versions changed · Red Hat
2026-10-10 CVSS score added · Red Hat
2026-10-10 CISA SSVC decision points changed
2026-10-10 Priority changed: LOW → MEDIUM
2026-10-13 Fix available: RHSA-2026:81410 · Red Hat
2026-10-13 Fix available: Red Hat Hardened Images · Red Hat
2026-10-21 CVSS score added · NVD

References

Exploit 1

https://github.com/OpenPrinting/cups/security/advisories/GHSA-hhw5-qqmc-p6rg

TI-2025-35903 cups has Authentication bypass with AuthType Negotiate CVSS 3.1HIGH 8.0
TI-2023-17077 CUPS vulnerable to use-after-free in cupsdAcceptClient() CVSS 3.1HIGH 7.1
TI-2026-27200 Path traversal in OpenPrinting cups CVSS 3.1MEDIUM 6.5
TI-2023-04157 OpenPrinting CUPS/libppd Postscript Parsing Heap Overflow CVSS 3.1HIGH 7.0
TI-2026-74874 Path traversal in OpenPrinting CUPS banner handling discloses files CVSS 3.1MEDIUM 5.3
TI-2026-27201 OpenPrinting CUPS: Heap overflow in `get_options()` CVSS 3.1MEDIUM 5.3

See all 24 →

Sources

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