CVE-2026-8631

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-05-20. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 9.8Exploit: None knownExposed: 0

A fix is available — apply it.

A potential security vulnerability has been identified in the HP Linux Imaging and Printing Software. This potential vulnerability may allow escalation of privileges and/or arbitrary code execution via an integer overflow in the hpcups processing path when handling crafted print data.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
60(Track)
EG Risk 60/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation2% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
77%
KEV
Not listed

Published

May 20, 2026

Last Modified

August 4, 2026

Advisory Details (12)

Auto-updated Sep 1, 2026
Patch available. Sources: redhat.
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.4 Extended Update Support

https://access.redhat.com/errata/RHSA-2026:48960
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Serv

https://access.redhat.com/errata/RHSA-2026:48959
redhat Patch Available

Affected: Red Hat Enterprise Linux 10.0 Extended Update Support.

https://access.redhat.com/errata/RHSA-2026:48606
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions.

https://access.redhat.com/errata/RHSA-2026:48603
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions.

https://access.redhat.com/errata/RHSA-2026:48586
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.6 Extended Update Support.

https://access.redhat.com/errata/RHSA-2026:48171
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.

https://access.redhat.com/errata/RHSA-2026:26335
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.

https://access.redhat.com/errata/RHSA-2026:26297
redhat Patch Available

Affected: Red Hat Enterprise Linux 10.

https://access.redhat.com/errata/RHSA-2026:26228
redhat Patch Available

2480300 – (CVE-2026-8631) CVE-2026-8631 HPLIP: HPLIP: Arbitrary code execution and privilege escalation via integer overflow in hpcups

Affected: Red Hat Enterprise Linux 10

https://bugzilla.redhat.com/show_bug.cgi?id=2480300
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-8631
redhat Patch Available

Affected: Red Hat Enterprise Linux 6",

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-8631.json

Vendor Advisories for CVE-2026-8631(4)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(11)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuprinter-driver-postscript-hp (3.24.4+dfsg0-0ubuntu8.1) @ resolute2026-08-23ubuntu
redhathplip-0:3.18.4-9.el8_6.12026-08-03redhat
redhathplip-0:3.18.4-9.el8_8.12026-08-03redhat
redhathplip-0:3.18.4-9.el8_4.12026-08-03redhat
redhathplip-0:3.23.12-8.el10_0.22026-07-30redhat
redhathplip-0:3.21.2-6.el9_2.12026-07-30redhat
redhathplip-0:3.21.2-6.el9_4.12026-07-30redhat
redhathplip-0:3.21.2-6.el9_6.12026-07-29redhat
redhathplip-0:3.21.2-6.el9_8.42026-06-16redhat
redhathplip-0:3.23.12-10.el10_2.42026-06-16redhat
redhathplip-0:3.18.4-13.el8_102026-06-16redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
hplip3.21.2+dfsg1-23.21.2+dfsg1-2+deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
hplip3.22.10+dfsg0-23.22.10+dfsg0-2+deb12u1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
hplip3.22.10+dfsg0-8.13.22.10+dfsg0-8.1+deb13u1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
hplip3.22.10+dfsg0-8.13.26.4+dfsg0-1—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(8)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 6× in last 7d / 145× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 414 total refreshes for this CVE.

  1. 2026-09-04 05:07 UTCEPSS rescore
  2. 2026-09-02 14:12 UTCEPSS rescore
  3. 2026-09-01 13:54 UTCEPSS rescore
  4. 2026-09-01 04:40 UTCEPSS rescore
  5. 2026-08-30 19:18 UTCEPSS rescore
  6. 2026-08-30 01:22 UTCEPSS rescore
  7. 2026-08-28 21:42 UTCEPSS rescore
  8. 2026-08-27 14:25 UTCEPSS rescore
  9. 2026-08-26 14:47 UTCEPSS rescore
  10. 2026-08-25 13:49 UTCEPSS rescore
  11. 2026-08-24 14:18 UTCEPSS rescore
  12. 2026-08-23 21:10 UTCVendor advisory
  13. 2026-08-23 21:10 UTCGHSA enrichment
  14. 2026-08-23 16:52 UTCEG score recompute
  15. 2026-08-23 16:52 UTCVendor advisory
  16. 2026-08-23 16:52 UTCGHSA enrichment
  17. 2026-08-23 00:19 UTCEPSS rescore
  18. 2026-08-21 23:49 UTCEPSS rescore
  19. 2026-08-21 22:52 UTCEG score recompute
  20. 2026-08-21 22:52 UTCVendor advisory
  21. 2026-08-21 22:52 UTCGHSA enrichment
  22. 2026-08-20 22:56 UTCEPSS rescore
  23. 2026-08-20 18:53 UTCEG score recompute
  24. 2026-08-20 18:53 UTCVendor advisory
  25. 2026-08-20 18:53 UTCGHSA enrichment
Show 75 more
  1. 2026-08-19 17:04 UTCEPSS rescore
  2. 2026-08-18 13:49 UTCEPSS rescore
  3. 2026-08-18 13:49 UTCEPSS rescore
  4. 2026-08-17 14:01 UTCEG score recompute
  5. 2026-08-17 14:01 UTCVendor advisory
  6. 2026-08-17 14:01 UTCGHSA enrichment
  7. 2026-08-17 13:47 UTCEPSS rescore
  8. 2026-08-17 09:51 UTCVendor advisory
  9. 2026-08-17 09:51 UTCGHSA enrichment
  10. 2026-08-16 16:52 UTCEG score recompute
  11. 2026-08-16 16:52 UTCVendor advisory
  12. 2026-08-16 16:52 UTCGHSA enrichment
  13. 2026-08-16 14:56 UTCEPSS rescore
  14. 2026-08-16 14:56 UTCEPSS rescore
  15. 2026-08-16 11:48 UTCVendor advisory
  16. 2026-08-16 11:48 UTCGHSA enrichment
  17. 2026-08-16 07:38 UTCVendor advisory
  18. 2026-08-16 07:38 UTCGHSA enrichment
  19. 2026-08-16 03:28 UTCEG score recompute
  20. 2026-08-16 03:28 UTCVendor advisory
  21. 2026-08-16 03:28 UTCGHSA enrichment
  22. 2026-08-16 02:15 UTCEPSS rescore
  23. 2026-08-15 03:15 UTCEG score recompute
  24. 2026-08-15 03:15 UTCVendor advisory
  25. 2026-08-15 03:15 UTCGHSA enrichment
  26. 2026-08-15 01:31 UTCEPSS rescore
  27. 2026-08-14 22:53 UTCVendor advisory
  28. 2026-08-14 22:53 UTCGHSA enrichment
  29. 2026-08-14 18:43 UTCVendor advisory
  30. 2026-08-14 18:43 UTCGHSA enrichment
  31. 2026-08-14 14:31 UTCVendor advisory
  32. 2026-08-14 14:31 UTCGHSA enrichment
  33. 2026-08-14 10:20 UTCVendor advisory
  34. 2026-08-14 10:20 UTCGHSA enrichment
  35. 2026-08-14 06:10 UTCVendor advisory
  36. 2026-08-14 06:10 UTCGHSA enrichment
  37. 2026-08-14 01:59 UTCEG score recompute
  38. 2026-08-14 01:59 UTCVendor advisory
  39. 2026-08-14 01:59 UTCGHSA enrichment
  40. 2026-08-13 22:00 UTCEPSS rescore
  41. 2026-08-13 08:05 UTCVendor advisory
  42. 2026-08-13 08:05 UTCGHSA enrichment
  43. 2026-08-13 02:47 UTCVendor advisory
  44. 2026-08-13 02:47 UTCGHSA enrichment
  45. 2026-08-12 22:36 UTCVendor advisory
  46. 2026-08-12 22:36 UTCGHSA enrichment
  47. 2026-08-12 18:25 UTCVendor advisory
  48. 2026-08-12 18:25 UTCGHSA enrichment
  49. 2026-08-12 14:14 UTCEG score recompute
  50. 2026-08-12 14:14 UTCVendor advisory
  51. 2026-08-12 14:14 UTCGHSA enrichment
  52. 2026-08-12 13:51 UTCEPSS rescore
  53. 2026-08-12 09:51 UTCVendor advisory
  54. 2026-08-12 09:51 UTCGHSA enrichment
  55. 2026-08-11 22:54 UTCVendor advisory
  56. 2026-08-11 22:54 UTCGHSA enrichment
  57. 2026-08-11 18:36 UTCVendor advisory
  58. 2026-08-11 18:36 UTCGHSA enrichment
  59. 2026-08-11 13:50 UTCEG score recompute
  60. 2026-08-11 13:50 UTCVendor advisory
  61. 2026-08-11 13:50 UTCGHSA enrichment
  62. 2026-08-11 13:43 UTCEPSS rescore
  63. 2026-08-11 08:54 UTCVendor advisory
  64. 2026-08-11 08:53 UTCGHSA enrichment
  65. 2026-08-11 04:43 UTCVendor advisory
  66. 2026-08-11 04:43 UTCGHSA enrichment
  67. 2026-08-11 00:33 UTCEG score recompute
  68. 2026-08-11 00:33 UTCVendor advisory
  69. 2026-08-11 00:33 UTCGHSA enrichment
  70. 2026-08-11 00:00 UTCEPSS rescore
  71. 2026-08-10 11:19 UTCVendor advisory
  72. 2026-08-10 11:19 UTCGHSA enrichment
  73. 2026-08-10 06:43 UTCVendor advisory
  74. 2026-08-10 06:42 UTCGHSA enrichment
  75. 2026-08-10 02:32 UTCVendor advisory

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-8631?
CVE-2026-8631 is a critical vulnerability published on May 20, 2026. A potential security vulnerability has been identified in the HP Linux Imaging and Printing Software. This potential vulnerability may allow escalation of privileges and/or arbitrary code execution via an integer overflow in the hpcups processing path when handling crafted print data.
When was CVE-2026-8631 disclosed?
CVE-2026-8631 was first published in the National Vulnerability Database on May 20, 2026, with the most recent update on August 4, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8631 actively exploited?
CVE-2026-8631 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 22.8% of all scored CVEs.
What is the CVSS score of CVE-2026-8631?
CVE-2026-8631 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-8631?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8631, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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