CVE-2019-18657 json
ClickHouse before 19.13.5.44 allows HTTP header injection via the url table function.
published 2019-10-31 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-8375
- cvss
- 5.3
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.5%
- EPSS 1.5% chance of exploitation in 30 days, percentile 73%
- public exploits
- 0
- none known
Summary
ClickHouse before 19.13.5.44 allows HTTP header injection via the url table function.
Patch / fix
- clickhouse clickhouse 19.13.5.44
- github.com/ClickHouse/ClickHouse#6466 pull request
- github.com/ClickHouse/ClickHouse#7526 pull request
Exploit prediction
1.47% chance of exploitation in the next 30 days, higher than 73% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N |
Classification
- Weakness
-
- CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component
References
-
github.com
/ClickHouse/ClickHouse/pull/6466
third-party-advisory
-
github.com
/ClickHouse/ClickHouse/pull/7526/files
patch, third-party-advisory
-
github.com
/ClickHouse/ClickHouse/blob/master/CHANGELOG.md
third-party-advisory
Sources
- CVE List CVE-2019-18657
- NVD CVE-2019-18657
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.