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
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 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)
EPSS
67.7%
KEV
Not listed

Published

May 20, 2026

Last Modified

June 30, 2026

Advisory Details (6)

Auto-updated Jun 30, 2026
Patch available. Sources: redhat.
redhat Patch Available

Affected: Red Hat Enterprise Linux 6",

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

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(3)

Vendor / EcosystemFixed in / PatchReleasedSource
redhathplip-0:3.23.12-10.el10_2.42026-06-16redhat
redhathplip-0:3.18.4-13.el8_102026-06-16redhat
redhathplip-0:3.21.2-6.el9_8.42026-06-16redhat

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.

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 194× 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 286 total refreshes for this CVE.

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

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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 June 30, 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 67.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
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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