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
Trending — 4 sources updated this week
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
72%
KEV
Not listed

Published

May 20, 2026

Last Modified

July 23, 2026

Advisory Details (6)

Auto-updated Jul 25, 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(4)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuprinter-driver-postscript-hp (3.24.4+dfsg0-0ubuntu5.2) @ questing2026-07-26ubuntu
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.

Additional Vendor Advisories

(1)

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 13× in last 7d / 42× 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 209 total refreshes for this CVE.

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

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 July 23, 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 28.0% 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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