CVE-2026-48961

HIGHNVD 7.37.3—
EchelonGraph scoreMEDIUM confidence

Score 7.3 from GitHub Security Advisory (severity: HIGH) published 2026-05-27. NVD baseline CVSS 7.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.3
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.3Exploit: NoneExposed: 0

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

IO::Compress versions from 2.207 before 2.220 for Perl ship a zipdetails CLI tool that crashes with undefined subroutine on Info-ZIP Unix Extra Field with 8-byte UID or GID.

When decode_ux() in bin/zipdetails handles an Info-ZIP Unix Extra Field (tag 0x7875) with UID Size or GID Size set to 8, causing zipdetails to decode an 8-byte UID or GID value, it dispatches through decodeLitteEndian(), which calls a misnamed helper unpackValueQ. The actual function defined in the same file is unpackValue_Q (with underscore); the call raises 'Undefined subroutine &main::unpackValueQ' and the script exits with status 255.

Library callers of IO::Compress and IO::Uncompress are not affected; the defect is in the bundled CLI tool.

CVSS v3
7.3
EG Score
7.3(medium)
EPSS
17.6%
KEV
Not listed

Published

May 27, 2026

Last Modified

May 29, 2026

Advisory Details (3)

Auto-updated Jun 11, 2026
No patch confirmed yet.
generic

oss-security - CVE-2026-48961: IO::Compress versions from 2.207 before 2.220 for Perl ship a zipdetails CLI tool that crashes with undefined subroutine on Info-ZIP Unix Extra Field with 8-byte UID or GID

http://www.openwall.com/lists/oss-security/2026/05/27/3
generic

Changes - metacpan.org

https://metacpan.org/release/PMQS/IO-Compress-2.220/changes
generic
https://github.com/pmqs/IO-Compress/commit/33c89d03d6e746ed2ead4f2f6570d47864c61bc7.patch

Vendor Advisories for CVE-2026-48961(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 63× 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 162 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-48961?
CVE-2026-48961 is a high vulnerability published on May 27, 2026. IO::Compress versions from 2.207 before 2.220 for Perl ship a zipdetails CLI tool that crashes with undefined subroutine on Info-ZIP Unix Extra Field with 8-byte UID or GID. When decodeux() in bin/zipdetails handles an Info-ZIP Unix Extra Field (tag 0x7875) with UID Size or GID Size set to 8,…
When was CVE-2026-48961 disclosed?
CVE-2026-48961 was first published in the National Vulnerability Database on May 27, 2026, with the most recent update on May 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-48961 actively exploited?
CVE-2026-48961 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 17.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-48961?
CVE-2026-48961 has a CVSS v3 base score of 7.3 (NVD).
How do I remediate CVE-2026-48961?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-48961, 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.

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