CVE-2026-110678
Cpanel::JSON::XS versions before 4.80 for Perl allow memory exhaustion by buffering incremental…
- Risk score
- 51/100
- CVSS
- 7.5 v3.1
- Exploit chance (30 days)
- 0.2%
- Published
- 19 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- Cpanel::JSON::XS versions before 4.80 for Perl allow memory exhaustion by buffering incremental input past max_size in incr_parse. The parser appends each chunk to its buffer. In scalar or list context, it compares max_size with how far it has progressed, not with the buffer length. A chunk that starts with a NUL byte…
- Affected
- See advisory
- Fix
- Upgrade the product to 4.80 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 7.5 high
- Remotely exploitable without logging in
References
Original description
Cpanel::JSON::XS versions before 4.80 for Perl allow memory exhaustion by buffering incremental input past max_size in incr_parse. The parser appends each chunk to its buffer. In scalar or list context, it compares max_size with how far it has progressed, not with the buffer length. A chunk that starts with a NUL byte stops the parser before it progresses, and a call in void context skips the check, so the buffer grows without limit. A peer streaming data to an incr_parse consumer can exhaust process memory regardless of max_size.
Last activity 19 Oct 2026. Patch Forecast updates every hour.