CVE-2026-23955 json
EVerest vulnerable to concatenation of strings literal and integers
published 2026-01-21 9 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-3780
- cvss
- 4.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 9%
- public exploits
- 0
- none known
Summary
EVerest is an EV charging software stack. Prior to version 2025.9.0, in several places, integer values are concatenated to literal strings when throwing errors. This results in pointers arithmetic instead of printing the integer value as expected, like most of interpreted languages. This can be used by malicious operator to read unintended memory regions, including the heap and the stack. Version 2025.9.0 fixes the issue.
Patch / fix
- linuxfoundation everest 2025.9.0
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 9 mo ago
Exploit prediction
0.20% chance of exploitation in the next 30 days, higher than 9% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/EVerest/everest-core/security/advisories/GHSA-px57-jx97-hrff referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.2 | CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N |
Affected products
- EVerest everest-core
Classification
- Weakness
-
- CWE-1046 Creation of Immutable Text Using String Concatenation
References
-
github.com
/EVerest/everest-core/security/advisories/GHSA-px57-jx97-hrff
exploit, vendor-advisory
Sources
- CVE List CVE-2026-23955
- NVD CVE-2026-23955
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.