CVE-2026-6656

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-20. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

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

Crypt::Password versions through 0.28 for Perl are susceptible to timing attacks.

The check_password method uses the built-in eq operator. This allows discrepancies in timing to be used to guess the underlying hash.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
41%
KEV
Not listed

Published

July 20, 2026

Last Modified

July 20, 2026

Advisory Details (2)

Auto-updated Jul 20, 2026
No patch confirmed yet.
generic

oss-security - CVE-2026-6656: Crypt::Password versions through 0.28 for Perl are susceptible to timing attacks

http://www.openwall.com/lists/oss-security/2026/07/20/4
generic

lib/Crypt/Password.pm - metacpan.org

https://metacpan.org/release/DRSTEVE/Crypt-Password-0.28/source/lib/Crypt/Password.pm#L190-193

Vendor Advisories for CVE-2026-6656(1)

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

Affected Packages

(1 across 1 ecosystem)
Debian:14(1)
PackageVulnerable rangeFixed inDependents
libcrypt-password-perl0.28-1, 0.28-2——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 16× in last 7d / 76× 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 461 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-6656?
CVE-2026-6656 is a high vulnerability published on July 20, 2026. Crypt::Password versions through 0.28 for Perl are susceptible to timing attacks. The check_password method uses the built-in eq operator. This allows discrepancies in timing to be used to guess the underlying hash.
When was CVE-2026-6656 disclosed?
CVE-2026-6656 was first published in the National Vulnerability Database on July 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-6656 actively exploited?
CVE-2026-6656 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 58.7% of all scored CVEs.
What is the CVSS score of CVE-2026-6656?
CVE-2026-6656 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-6656?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-6656, 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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