CVE-2026-61815 zbateson/mail-mime-parser - CRLF Injection

zbateson/mail-mime-parser < 3.0.6 and < 4.0.2 contains a CRLF injection caused by unfiltered CR/LF characters in attachment filenames interpolated into MIME headers, letting attackers inject arbitrary headers, exploit requires attacker-controlled attachment filename.

CVSS base score 7.2 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.18% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
CRLF Injection
Impact
Information Disclosure
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Published
24 September 2026
Updated
15 October 2026
Weakness
CWE-93

Vendor fix

Upgrade to versions 3.0.6 or 4.0.2 or later; alternatively, sanitize filenames to remove CR/LF characters before use.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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