CVE-2020-23259 json
An issue found in Jsish v.3.0.11 and before allows an attacker to cause a denial of service via the Jsi_Strlen function in the src/jsiChar.…
published 2023-04-04 3 y ago modified 2026-06-17 4 mo ago also EUVD-2020-16010
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 55%
- public exploits
- 0
- none known
Summary
An issue found in Jsish v.3.0.11 and before allows an attacker to cause a denial of service via the Jsi_Strlen function in the src/jsiChar.c file.
Patch / fix
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 20 mo ago
Exploit prediction
0.77% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/pcmacdon/jsish/issues/13 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Classification
- Weakness
-
- CWE-476 NULL Pointer Dereference
References
-
github.com
/pcmacdon/jsish/issues/13
exploit, issue-tracking, patch
-
jsish.org
/fossil/jsi2/tktview?name=b6bb078e00
broken-link
Sources
- CVE List CVE-2020-23259
- NVD CVE-2020-23259
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