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01 Record

CVE-2026-34980

OpenPrinting CUPS: Shared PostScript queue lets anonymous Print-Job requests reach `lp` code execution over the network

MediumPUBLISHEDCNA: GitHub_M
CNA base score6.1 CVSS v4.0CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N
View raw JSON

02 Description

OpenPrinting CUPS: Shared PostScript queue lets anonymous Print-Job requests reach `lp` code execution over the network

03 Exploitation and scoring

Exploitation
Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
SSVC decision
  • ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
1.57% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 75.2% of scored records. A rank, not a probability.
NVD base score
6.1 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD analysis status
Analyzed. NVD last modified this record on 2026-07-24.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-04-03 21:18Z6 MO AGO
Last updated
2026-04-06 13:12Z6 MO AGO
Reserved
2026-03-31
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
Medium (CVSS 6.1)
CNA CVSS vector
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N
Weaknesses
  • CWE-20Improper Input ValidationClass
  • CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')Base
Data version
5.2
Document digest
a84a114605a9f205fd133c08e1cb48d4b82b891a4a5068c07814a4046eca233f

05 Affected products

VendorProductVersionsPlatforms
OpenPrintingcups<= 2.4.16—

06 References

07 Fixed in

AlmaLinux 8

  • cups
    Fixed in 1:2.2.6-68.el8_10
  • cups-client
    Fixed in 1:2.2.6-68.el8_10
  • cups-devel
    Fixed in 1:2.2.6-68.el8_10
  • cups-filesystem
    Fixed in 1:2.2.6-68.el8_10
  • cups-ipptool
    Fixed in 1:2.2.6-68.el8_10
  • cups-libs
    Fixed in 1:2.2.6-68.el8_10
  • cups-lpd
    Fixed in 1:2.2.6-68.el8_10

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

AlmaLinux 9

  • cups
    Fixed in 1:2.3.3op2-39.el9_8
  • cups-client
    Fixed in 1:2.3.3op2-39.el9_8
  • cups-devel
    Fixed in 1:2.3.3op2-39.el9_8
  • cups-filesystem
    Fixed in 1:2.3.3op2-39.el9_8
  • cups-ipptool
    Fixed in 1:2.3.3op2-39.el9_8
  • cups-libs
    Fixed in 1:2.3.3op2-39.el9_8
  • cups-lpd
    Fixed in 1:2.3.3op2-39.el9_8
  • cups-printerapp
    Fixed in 1:2.3.3op2-39.el9_8

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

AlmaLinux 10

  • cups
    Fixed in 1:2.4.10-18.el10_2
  • cups-client
    Fixed in 1:2.4.10-18.el10_2
  • cups-devel
    Fixed in 1:2.4.10-18.el10_2
  • cups-filesystem
    Fixed in 1:2.4.10-18.el10_2
  • cups-ipptool
    Fixed in 1:2.4.10-18.el10_2
  • cups-libs
    Fixed in 1:2.4.10-18.el10_2
  • cups-lpd
    Fixed in 1:2.4.10-18.el10_2
  • cups-printerapp
    Fixed in 1:2.4.10-18.el10_2

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 8

  • cups
    Fixed in 1:2.2.6-68.el8_10
  • cups-client
    Fixed in 1:2.2.6-68.el8_10
  • cups-devel
    Fixed in 1:2.2.6-68.el8_10
  • cups-filesystem
    Fixed in 1:2.2.6-68.el8_10
  • cups-ipptool
    Fixed in 1:2.2.6-68.el8_10
  • cups-libs
    Fixed in 1:2.2.6-68.el8_10
  • cups-lpd
    Fixed in 1:2.2.6-68.el8_10

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 9

  • cups
    Fixed in 1:2.3.3op2-39.el9_8
  • cups-client
    Fixed in 1:2.3.3op2-39.el9_8
  • cups-devel
    Fixed in 1:2.3.3op2-39.el9_8
  • cups-filesystem
    Fixed in 1:2.3.3op2-39.el9_8
  • cups-ipptool
    Fixed in 1:2.3.3op2-39.el9_8
  • cups-libs
    Fixed in 1:2.3.3op2-39.el9_8
  • cups-lpd
    Fixed in 1:2.3.3op2-39.el9_8
  • cups-printerapp
    Fixed in 1:2.3.3op2-39.el9_8

Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 10

  • cups
    Fixed in 1:2.4.10-18.el10_2
  • cups-client
    Fixed in 1:2.4.10-18.el10_2
  • cups-devel
    Fixed in 1:2.4.10-18.el10_2
  • cups-filesystem
    Fixed in 1:2.4.10-18.el10_2
  • cups-ipptool
    Fixed in 1:2.4.10-18.el10_2
  • cups-libs
    Fixed in 1:2.4.10-18.el10_2
  • cups-lpd
    Fixed in 1:2.4.10-18.el10_2
  • cups-printerapp
    Fixed in 1:2.4.10-18.el10_2

Derived from AlmaLinux 10. Partial coverage: only packages taken from AlmaLinux 10 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 12

  • cups
    No fix yet

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • cups
    No fix yet

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • cups
    Fixed in 2.4.17-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • cups
    Fixed in 2.4.1op1-1ubuntu4.20

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 24.04 LTS

  • cups
    Fixed in 2.4.7-1.2ubuntu7.13

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 25.10

  • cups
    Fixed in 2.4.12-0ubuntu3.9

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 26.04 LTS

  • cups
    Fixed in 2.4.16-1ubuntu1.2

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 16.04 LTS

  • cups
    Fixed in 2.1.3-4ubuntu0.11+esm13
    Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 18.04 LTS

  • cups
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 20.04 LTS

  • cups
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.