CVE-2026-116267: MIME::Parser versions before 5.521 for Perl allow memory exhaustion via indented error messages from
Source GCVE Database
Not known to be exploited : upgrade to 5.521 soon.
Data as of 28 Oct 2026, 19:42 UTC
Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD
- Patch
- Available – fixed in 5.521
Exploitation evidence
Disclosed: evidence found.
CVE published 28 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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 MIME-tools (Perl module) to 5.521.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| MIME-tools | Affected
| Fixed in
|
CPANMIME-toolspkg:cpan/MIME-toolsOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix is available in MIME::Parser version 5.521. Users should upgrade to version 5.521 or later to address this vulnerability. No other mitigation or temporary workaround is indicated.
Description
MIME::Parser versions before 5.521 for Perl are vulnerable to memory exhaustion caused by indented error messages generated from a truncated, deeply nested MIME message. The parser logs errors at each nesting level with increasing indentation, causing the stored diagnostics to grow quadratically with the nesting depth. There is no default limit on nesting depth, which can lead to excessive memory consumption.