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CVE-2026-93450VulnerabilityPublished Updated

Ordered JSON Marshal · go-openapi/swag jsonutils before 0.27.1 Uncontrolled Recursion

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-93450· High 8.7

Not known to be exploited · CVSS 8.7 High : upgrade to 0.27.1 soon.

Data as of 31 Oct 2026, 08:35 UTC

CVSS 4.0 base score
8.7High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.9% chance of exploitation in 30 days – higher than 60% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 0.27.1
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 17 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade swag to 0.27.1.

Affected software

ProductAffectedFixed in
go-openapiswagAffected
  • <0.27.1
Fixed in
  • 0.27.1
Goswagpkg:golang/swagOther threatsAffected
  • <0.27.1
Fixed in
  • 0.27.1

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

CVE-2026-93450 is a vulnerability in go-openapi/swag jsonutils before version 0.27.1 involving uncontrolled recursion in ordered JSON marshal and unmarshal operations. The flaw relates to improper handling of recursive data structures during JSON processing.

References

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