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VulnerabilityPublished Updated

CVE-2025-61726: Go standard library net/url · Uncontrolled Resource Consumption

Affects Go standard library net/urlSource CVE Database V5

0

Not known to be exploited · CVSS 7.5 High : upgrade to 1.25.6 or 1.24.12 soon.

Data as of 26 Oct 2026, 16:39 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
2.2% chance of exploitation in 30 days – higher than 83% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.25.6, 1.24.12
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 28 Jan 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 26 Oct 2026.

What to do

Upgrade Go standard library net/url to 1.25.6 or 1.24.12.

Affected software

ProductAffectedFixed in
Go standard librarynet/urlAffected
  • >=1.25.0 <1.25.6
Fixed in
  • 1.25.6
Go standard librarynet/urlAffected
  • <1.24.12
Fixed in
  • 1.24.12
Gonet/urlpkg:golang/net/urlOther threatsAffected
  • =1.25.0
Fixed in–
Gonet/urlpkg:golang/net/urlOther threatsAffected
  • <1.24.12
  • >=1.25.0 <1.25.6
Fixed in
  • 1.24.12
  • 1.25.6

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

AI-suggested

Red Hat advises updating the affected net/url package as soon as possible. No practical mitigation or workaround has been identified. Users should apply vendor patches when available to remediate this issue.

Description

The net/url package does not set a limit on the number of query parameters in a query. While the maximum size of query parameters in URLs is generally limited by the maximum request header size, the net/http.Request.ParseForm method can parse large URL-encoded forms. Parsing a large form containing many unique query parameters can cause excessive memory consumption.

References

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