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CVE-2026-42496

39
FAUCET Score

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.

First published: May 26, 2026Last modified: May 26, 2026

Impacted Technologies

VendorProductVersion(s)CPE
< 3.08CPE matchmatch criteria
cpe:2.3:a:archive\:\:tar_project:archive\:\:tar:*:*:*:*:*:perl:*:*

CVSS Data

CVSS version used by this source: 3.1

9.1CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.43%
Probability of exploitation in next 30 days
EPSS Percentile
35.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0043 is in the 12th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: azl3 perl 5.38.2-509 on Azure Linux 3.0Fixed in: 5.38.2-510
microsoftpatch availablevia msrc
Product: 20313-17084Fixed in: 5.38.2-510

Vendor Advisories (1)

microsoft2026-May/CVE-2026-42496Important

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

May 12, 2026

References

access.redhat.com / errata/RHSA-2026:30851
access.redhat.com / errata/RHSA-2026:30852
access.redhat.com / errata/RHSA-2026:30856
access.redhat.com / errata/RHSA-2026:30857
access.redhat.com / security/cve/CVE-2026-42496
bugzilla.redhat.com / show_bug.cgi
security.access.redhat.com / data/csaf/v2/vex/2026/cve-2026-42496.json
github.com / jib/archive-tar-new/commit/17c873492a05eddc0de18c1485e0b2cccd5a9158.patch
Patch
metacpan.org / release/BINGOS/Archive-Tar-3.08/changes
Release Notes
cve.org / CVERecord
Third Party Advisory