CVE-2020-37012Public exploitNetwork attack vector

Unauthenticated command execution via LaTeX pipe input

Published Jan 29, 2026 · Updated Jan 29, 2026

OS command injection in Ammar Faizi Tea LaTex 1.0 allows remote attackers to execute arbitrary shell commands through the tex2png API. The /api.php handler passes the JSON content field to TeaLaTeX::latexCompile, where a crafted \input{|...} pipe invokes a shell command. The endpoint requires no authentication or user interaction, and the published exploit demonstrates a reverse shell from the server-side compiler process.

CVSS severity9.3
Critical
EPSS probability0.77%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Ammar Faizi Tea LaTex 1.0 allows remote attackers to execute arbitrary shell commands through the tex2png API. The /api.php handler passes the JSON content field to TeaLaTeX::latexCompile, where a crafted \input{|...} pipe invokes a shell command. The endpoint requires no authentication or user interaction, and the published exploit demonstrates a reverse shell from the server-side compiler process.

The record

CVE
CVE-2020-37012
Published
Jan 29, 2026
Updated
Jan 29, 2026
Vendor
Ammar Faizi
Product
Tea LaTex
Classifications
CWE-78, T1190, T1059.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 29, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 29, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Ammar Faizi · Tea LaTexversion=1.0

Published CVSS scores

9.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1190Exploit Public-Facing Application
T1059.004Unix Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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