CVE-2013-5036: The Square Squash allows remote attackers to execute arbitrary code via a YAML document in the (1) namespace p

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HIGH 7.5MITIGATE

CVE-2013-5036 is a high-severity flaw (CVSS 7.5) affecting square squash. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Square Squash allows remote attackers to execute arbitrary code via a YAML document in the (1) namespace parameter to the deobfuscation function or (2) sourcemap parameter to the sourcemap function in app/controllers/api/v1_controller.rb.

Why this priority

High severity
EPSS top 1%: very likely to be exploited
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	46.2% (top 1%)
CISA exploited list	No
Weakness	CWE-94
Published	2014-05-27
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: squash

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2014-05-27 14:55 UTCPublished CVE record published
2026-06-16 23:58 UTCUpdated Record last modified

squash square squash MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy square-squash || rpm -q square-squash || square-squash --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Squash - YAML Code Execution (Metasploit)
Metasploit: Squash YAML Code Execution

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2013-5036?

square squash: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2013-5036 being exploited?

CVE-2013-5036 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2013-5036 affect?

CVE-2013-5036 affects square squash. Severity is high (CVSS 7.5). The Square Squash allows remote attackers to execute arbitrary code via a YAML document in the (1) namespace parameter to the deobfuscation function or (2) sourcemap parameter to the sourcemap function in app/controllers/api/v1_controller.r

How urgent is CVE-2013-5036?

Priority 56/100. High severity; EPSS top 1%: very likely to be exploited; Public exploit reference

References

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