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Fencer Vulns
high 7.5

CVE-2023-24038 json

The HTML-StripScripts module through 1.06 for Perl allows _hss_attval_style ReDoS because of catastrophic backtracking for HTML content wit…

published 2023-01-21 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-28102

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 67%
public exploits
0
none known

Summary

The HTML-StripScripts module through 1.06 for Perl allows _hss_attval_style ReDoS because of catastrophic backtracking for HTML content with certain style attributes.

Patch / fix

  • libhtml-stripscripts-perl Debian 14, Debian 13, Debian 12 1.06-4

debian advisories DEBIAN-CVE-2023-24038

  • libhtml-stripscripts-perl Ubuntu 18.04 LTS 1.06-1ubuntu0.18.04.1
  • libhtml-stripscripts-perl Ubuntu 20.04 LTS 1.06-1ubuntu0.20.04.1
  • libhtml-stripscripts-perl Ubuntu 22.04 LTS 1.06-1ubuntu0.22.04.1
  • libhtml-stripscripts-perl Ubuntu Pro 14.04 LTS 1.05-1ubuntu0.1~esm1
  • libhtml-stripscripts-perl Ubuntu Pro 16.04 LTS 1.05-2ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2023-24038

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-24038 updated cvss 7.5

perl-HTML-StripScripts: Handler for style attribute is vulnerable to ReDoS

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
19 mo ago

Exploit prediction

1.15% chance of exploitation in the next 30 days, higher than 67% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/clintongormley/perl-html-stripscripts/issues/3 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Classification

Weakness
  • CWE-1333 Inefficient Regular Expression Complexity

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.