CVE-2023-26493Public exploitNetwork attack vector

Runner takeover via unquoted pull-request branch name

Published Mar 27, 2023 · Updated Feb 19, 2025

Command injection in Cocos Engine before 6d06aefa26 allows remote authenticated users to execute commands on a GitHub Actions runner. The web-interface-check.yml workflow inserts the pull request's attacker-controlled head_ref branch name into git fetch and git merge shell commands without neutralization. Opening or updating a fork-based pull request triggers the write-token workflow, enabling repository modification and workflow-secret theft.

CVSS severity8.1
High
EPSS probability2.91%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Cocos Engine before 6d06aefa26 allows remote authenticated users to execute commands on a GitHub Actions runner. The web-interface-check.yml workflow inserts the pull request's attacker-controlled head_ref branch name into git fetch and git merge shell commands without neutralization. Opening or updating a fork-based pull request triggers the write-token workflow, enabling repository modification and workflow-secret theft.

The record

CVE
CVE-2023-26493
Published
Mar 27, 2023
Updated
Feb 19, 2025
Vendor
Cocos
Product
Cocos Engine
Classifications
CWE-77, CWE-74, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 27, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 19, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=< 6d06aefa26

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Cocos · Cocos Engineversion=< 6d06aefa26

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.1GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
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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