CVE-2018-19198
UriQuery.c allows an out-of-bounds write via a uriComposeQuery* or uriComposeQueryEx* function because the '&' character is mishandled in certain contexts.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.37%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue was discovered in uriparser before 0.9.0. UriQuery.c allows an out-of-bounds write via a uriComposeQuery* or uriComposeQueryEx* function because the '&' character is mishandled in certain contexts.
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.37% probability · 84th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- uriparser project/uriparser · debian/debian linux
- Source
- cve@mitre.org
EPSS 2.4% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://access.redhat.com/errata/RHSA-2019:2280
- https://github.com/uriparser/uriparser/blob/uriparser-0.9.0/ChangeLogRelease Notes
- https://github.com/uriparser/uriparser/commit/864f5d4c127def386dd5cc926ad96934b297f04ePatch
- https://lists.debian.org/debian-lts-announce/2018/11/msg00019.htmlThird Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2280
- https://github.com/uriparser/uriparser/blob/uriparser-0.9.0/ChangeLogRelease Notes
- https://github.com/uriparser/uriparser/commit/864f5d4c127def386dd5cc926ad96934b297f04ePatch
- https://lists.debian.org/debian-lts-announce/2018/11/msg00019.htmlThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.