CVE-2023-1718 in the critical feed json
Bitrix24 Denial-of-Service (DoS) via Improper File Stream Access
published 2023-11-01 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-23941
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 28.7%
- EPSS 28.7% chance of exploitation in 30 days, percentile 98%
- public exploits
- 0
- none known
Summary
Improper file stream access in /desktop_app/file.ajax.php?action=uploadfile in Bitrix24 22.0.300 allows unauthenticated remote attackers to cause denial-of-service via a crafted "tmp_url".
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
28.69% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- starlabs.sg https://starlabs.sg/advisories/23/23-1718/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 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 |
Affected products
- Bitrix24 Bitrix24
Classification
- Weakness
-
- CWE-835 Loop with Unreachable Exit Condition
References
-
starlabs.sg
/advisories/23/23-1718/
third-party-advisory, exploit
Sources
- CVE List CVE-2023-1718
- NVD CVE-2023-1718
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.