CVE-2026-116273
MIME::Parser versions before 5.521 for Perl set no limit on the number of message parts by default…
- Risk score
- 52/100
- CVSS
- 7.5 v3.1
- Exploit chance (30 days)
- 0.2%
- Published
- 28 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- MIME::Parser versions before 5.521 for Perl set no limit on the number of message parts by default, allowing memory exhaustion. The max_parts option defaulted to -1, which disables the limit, so a parser created with default settings builds an entity for every part however many a message has. Version 5.521 sets max_pa…
- Affected
- See advisory
- Fix
- Upgrade the product to 5.521 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 7.5 high
- Remotely exploitable without logging in
References
Original description
MIME::Parser versions before 5.521 for Perl set no limit on the number of message parts by default, allowing memory exhaustion. The max_parts option defaulted to -1, which disables the limit, so a parser created with default settings builds an entity for every part however many a message has. Version 5.521 sets max_parts to 1000 and max_depth to 64 by default. Setting either to -1 still removes the limit.
Last activity 28 Oct 2026. Patch Forecast updates every hour.