What is CVE-2015-8607?

CVE-2015-8607 is a high-severity vulnerability in Perl Pathtools, classified under Improper Input Validation. CVSS score: 7.3/10. Published 2016-01-13.

How severe is CVE-2015-8607?

High severity. CVSS v3 base score is 7.3 out of 10.

Is CVE-2015-8607 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Improper input validation in Perl Pathtools

CVE-2015-8607

The canonpath function in the File::Spec module in PathTools before 3.62, as used in Perl, does not properly preserve the taint attribute of data, which might allow context-dependent attackers to bypass the taint protection mechanism via a crafted string.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2016-01-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.031 (87.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 87.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.031 · newest: 0.031 · change: 0.000

Affected products

Perl Pathtools
Canonical Ubuntu Linux — versions 15.04, 15.10
Debian Linux — versions 8.0

Weakness classification (CWE)

CWE-20 — Improper Input Validation

Public proof-of-concept exploits

References

security.gentoo.org/glsa/201701-75 (vendor-advisory)
www.securityfocus.com/bid/80504 (vdb-entry)
www.securitytracker.com/id/1034772 (vdb-entry)
lists.fedoraproject.org/pipermail/package-announce/2016-January/176228.html (vendor-advisory)
www.debian.org/security/2016/dsa-3441 (vendor-advisory)
lists.fedoraproject.org/pipermail/package-announce/2016-January/175494.html (vendor-advisory)
www.ubuntu.com/usn/USN-2878-1 (vendor-advisory)
lists.opensuse.org/opensuse-updates/2016-03/msg00112.html (vendor-advisory)
www.oracle.com/security-alerts/cpujul2020.html
cpansearch.perl.org/src/RJBS/PathTools-3.62/Changes

Frequently asked questions

What is CVE-2015-8607?: CVE-2015-8607 is a high-severity vulnerability in Perl Pathtools, classified under Improper Input Validation. CVSS score: 7.3/10. Published 2016-01-13.
How severe is CVE-2015-8607?: High severity. CVSS v3 base score is 7.3 out of 10.
Is CVE-2015-8607 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.