CVE-2026-42496

CRITICALNVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-05-26. NVD baseline CVSS 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.1Exploit: None knownExposed: 0

A fix is available — apply it.

Archive::Tar versions before 3.08 for Perl extract symlinks with attacker controlled targets outside the extraction directory.

_make_special_file() passes the tar header's linkname to symlink() without validating it against absolute paths or .. segments. The secure-extract mode check that guards regular file extraction does not cover the symlink target.

A subsequent open through the extracted name reads or writes the attacker chosen path.

CVSS v3
9.1
EG Score
9.1(medium)
EG Risk
56(Track)
EG Risk 56/100SSVC: 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
Severity91% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
36%
KEV
Not listed

Published

May 26, 2026

Last Modified

July 24, 2026

Advisory Details (10)

Auto-updated Aug 29, 2026
Patch available. Sources: redhat.
redhat

Affected: Red Hat Enterprise Linux 7",

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42496.json
redhat Patch Available

2481314 – (CVE-2026-42496) CVE-2026-42496 perl-archive-tar: perl-archive-tar: Path traversal via crafted symlinks allows arbitrary file access

Affected: Red Hat Enterprise Linux 8

https://bugzilla.redhat.com/show_bug.cgi?id=2481314
redhat Patch Available

CVE-2026-42496 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-42496
redhat Patch Available

Affected: Red Hat Enterprise Linux 10.

https://access.redhat.com/errata/RHSA-2026:30857
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.

https://access.redhat.com/errata/RHSA-2026:30856
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.

https://access.redhat.com/errata/RHSA-2026:30852
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.

https://access.redhat.com/errata/RHSA-2026:30851
generic
https://www.cve.org/CVERecord?id=CVE-2026-42497
generic

CHANGES - metacpan.org

https://metacpan.org/release/BINGOS/Archive-Tar-3.08/changes
generic
https://github.com/jib/archive-tar-new/commit/17c873492a05eddc0de18c1485e0b2cccd5a9158.patch

Vendor Advisories for CVE-2026-42496(3)

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

Patch Availability(6)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuperl-modules-5.22 (5.22.1-9ubuntu0.9+esm2) @ xenial2026-08-23ubuntu
ubuntuperl-modules-5.40 (5.40.1-6ubuntu0.1) @ questing2026-08-23ubuntu
redhatperl-Archive-Tar-0:3.02-512.el10_2.12026-06-29redhat
redhatperl-Archive-Tar-0:2.38-6.el9_8.12026-06-29redhat
redhatperl:5.32-8100020260616084412.651ee29f2026-06-29redhat
redhatperl-Archive-Tar-0:2.30-2.el8_102026-06-29redhat

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.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
perl5.32.1-4 ... 5.44.0-1 (59 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
perl5.36.0-10 ... 5.44.0-1 (42 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
perl5.40.1-6 ... 5.44.0-1 (10 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
perl5.40.1-6 ... 5.44.0-1 (10 versions)——

Weakness Classification(2)

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

Additional Vendor Advisories

(5)

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 6× in last 7d / 166× 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 436 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-42496?
CVE-2026-42496 is a critical vulnerability published on May 26, 2026. Archive::Tar versions before 3.08 for Perl extract symlinks with attacker controlled targets outside the extraction directory. makespecial_file() passes the tar header's linkname to symlink() without validating it against absolute paths or .. segments. The secure-extract mode check that guards…
When was CVE-2026-42496 disclosed?
CVE-2026-42496 was first published in the National Vulnerability Database on May 26, 2026, with the most recent update on July 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-42496 actively exploited?
CVE-2026-42496 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 64.1% of all scored CVEs.
What is the CVSS score of CVE-2026-42496?
CVE-2026-42496 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-42496?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-42496, 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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