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CVE-2015-8557

25
FAUCET Score

CVE-2015-8557 is a critical command injection vulnerability affecting Pygments versions 1.2.2 through 2.0.2, specifically within the FontManager._get_nix_font_path function in formatters/img.py. This flaw allows remote attackers to execute arbitrary commands by injecting shell metacharacters into a font name. With a CVSS score of 9.0 (CRITICAL), it presents a high-impact threat (C:H/I:H/A:H) with a network attack vector (AV:N) and no user interaction required (UI:N), though attack complexity is high (AC:H). Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
12.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
15.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:*
15.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*
1.2.2CPE matchmatch criteria
cpe:2.3:a:pygments:pygments:1.2.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.0CRITICAL

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
6.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
6.66%
Probability of exploitation in next 30 days
EPSS Percentile
93.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0666 is in the 88th percentile among its peer group of 200 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.4 Reddit, 1.1 Bluesky, 0.8 Mastodon, and 2.3 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.8 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (10)

pippatch availablevia ghsa
Product: PygmentsFixed in: 2.1
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: python27-python-pygments
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: python33-python-pygments
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-python34-python-pygments
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 6 (Juno)Fixed in: python-pygments
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)Fixed in: python-pygments
redhatend of lifevia redhat_api
Product: Red Hat Ceph Storage 1.2Fixed in: python-pygments
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: python-pygments
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: python-pygments
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse)Fixed in: python-pygments

Vendor Advisories (2)

pipGHSA-fff8-4w9p-7v76critical

Command Injection in Pygments

May 17, 2022
redhatCVE-2015-8557Moderate

python-pygments: Shell injection in FontManager._get_nix_font_path

Sep 28, 2015

References

packetstormsecurity.com / files/133823/Pygments-FontManager._get_nix_font_path-Shell-Injection.html
bitbucket.org / birkenfeld/pygments-main/pull-requests/501/fix-shell-injection-in/diff
Vendor Advisory
seclists.org / fulldisclosure/2015/Oct/4
security.gentoo.org / glsa/201612-05
debian.org / security/2016/dsa-3445
openwall.com / lists/oss-security/2015/12/14/17
openwall.com / lists/oss-security/2015/12/14/6
oracle.com / technetwork/topics/security/bulletinjan2016-2867206.html
ubuntu.com / usn/USN-2862-1