CVE-2025-40905

HIGHNVD 7.37.3—
EchelonGraph scoreMEDIUM confidence

Score 7.3 from GitHub Security Advisory (severity: HIGH) published 2026-02-13. NVD baseline CVSS 7.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.3Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

WWW::OAuth 1.000 and earlier for Perl uses the rand() function as the default source of entropy, which is not cryptographically secure, for cryptographic functions.

CVSS v3
7.3
EG Score
7.3(medium)
EG Risk
48(Track)
EG Risk 48/100SSVC: 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
Severity73% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
18%
KEV
Not listed

Published

February 13, 2026

Last Modified

June 17, 2026

Advisory Details (4)

Auto-updated Aug 2, 2026
No patch confirmed yet.
generic

oss-security - CVE-2025-40905: WWW::OAuth 1.000 and earlier for Perl uses insecure rand() function for cryptographic functions

http://www.openwall.com/lists/oss-security/2026/02/13/1
generic

CPAN Author’s Guide to Random Data for Security — CPAN Security Group (CPANSec) 🦆

https://security.metacpan.org/docs/guides/random-data-for-security.html
generic

rand - Perldoc Browser

https://perldoc.perl.org/functions/rand
generic

Client Challenge

https://metacpan.org/release/DBOOK/WWW-OAuth-1.000/source/lib/WWW/OAuth.pm#L86

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
libwww-oauth-perl1.000-1.1, 1.000-2, 1.001-1, 1.002-1, 1.003-1——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
libwww-oauth-perl1.000-2, 1.001-1, 1.002-1, 1.003-1——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
libwww-oauth-perl—1.001-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
libwww-oauth-perl—1.001-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 26× 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 157 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2025-40905?
CVE-2025-40905 is a high vulnerability published on February 13, 2026. WWW::OAuth 1.000 and earlier for Perl uses the rand() function as the default source of entropy, which is not cryptographically secure, for cryptographic functions.
When was CVE-2025-40905 disclosed?
CVE-2025-40905 was first published in the National Vulnerability Database on February 13, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-40905 actively exploited?
CVE-2025-40905 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 81.9% of all scored CVEs.
What is the CVSS score of CVE-2025-40905?
CVE-2025-40905 has a CVSS v3 base score of 7.3 (NVD).
How do I remediate CVE-2025-40905?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-40905, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-40905

Explore →

Is Your Infrastructure Affected by CVE-2025-40905?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs