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Vulnerabilities

Vulnerability · CVE-2026-94440

Memory limit bypass when parsing MIME headers in net/textproto, mime/multipart

Published Oct 8, 2026 · catalog updated Oct 16, 2026 · Memory limit bypass when

Check if you run it

No confirmed exploitation is on record for CVE-2026-94440. EPSS is 0.40%. Act only if a listed version of Memory limit bypass when is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Memory limit bypass when).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Unknown—
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.40%
Remediation
Not established
Affected products
Go stdlib

Parsing a multipart form can bypass memory limits and read an arbitrarily long line into memory when the remaining limit at the start of a part is less than 400 bytes.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Go stdlib0 → 1.26.9

How to fix CVE-2026-94440

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-94440. EPSS is 0.40%. Act only if a listed version of Memory limit bypass when is installed.

Which versions are affected?

Compare what you have installed with 0 → 1.26.9. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.40%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 8, 2026 · OpenSSF OSV / OSV Scanner

    Detected

    Parsing a multipart form can bypass memory limits and read an arbitrarily long line into memory when the remaining limit at the start of a part is less than 400 bytes.

  2. Oct 16, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    stdlib fixed in 1.26.9

  3. Oct 16, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    stdlib fixed in 1.26.9

  4. Oct 16, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    Parsing a multipart form can bypass memory limits and read an arbitrarily long line into memory when the remaining limit at the start of a part is less than 400 bytes.

Sources

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.