CVE-2026-110680
Cpanel::JSON::XS versions from 4.20 before 4.80 for Perl write out of bounds when a tied or shared…
- 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 from 4.20 before 4.80 for Perl write out of bounds when a tied or shared hash grows during canonical encoding in encode_hv. With canonical, the keys of a tied or threads::shared hash are counted before a second pass collects them for sorting. The encoder uses a fixed 64-entry stack array or, …
- 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 from 4.20 before 4.80 for Perl write out of bounds when a tied or shared hash grows during canonical encoding in encode_hv. With canonical, the keys of a tied or threads::shared hash are counted before a second pass collects them for sorting. The encoder uses a fixed 64-entry stack array or, for larger counts, a heap array sized from the first pass. If the second pass exceeds that capacity, entries are written out of bounds before the counts are compared. This corrupts stack or heap memory and can crash the process.
Last activity 19 Oct 2026. Patch Forecast updates every hour.