Riskcovery

CVE-2026-39820

Quadratic string concatentation in consumeComment in net/mail

State
Published
Severity
7.5 High
Published
May 7, 2026
Updated
Sep 18, 2026
Reserved
Apr 7, 2026

Read the record on cve.org

Description

Well-crafted inputs reaching ParseAddress, ParseAddressList, and ParseDate were able to trigger excessive CPU exhaustion and memory allocations.

Scores

CVSSScoreVectorSource
3.17.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCISA-ADP
3.17.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hredhat-SADP

Weaknesses

  • CWE-606 Unchecked Input for Loop Condition

Affected Products

ProductVersions
net/mailGo standard library
  • before 1.25.10Affected
  • 1.26.0-0 to before 1.26.3Affected

References

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