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CVE-2019-19203
An issue was discovered in Oniguruma 6.x before 6.9.4_rc2. In the function gb18030_mbc_enc_len in file gb18030.c, a UChar pointer is…
High7.5EPSS 4.1%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
An issue was discovered in Oniguruma 6.x before 6.9.4_rc2. In the function gb18030_mbc_enc_len in file gb18030.c, a UChar pointer is dereferenced without checking if it passed the end of the matched string. This leads to a heap-based buffer over-read.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 4.1% · top 9.3% of all CVEs (6 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
Affected products
n/a
- affected n/a
References (6)
- https://github.com/kkos/oniguruma/releases/tag/v6.9.4_rc2 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/kkos/oniguruma/issues/163 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/ManhNDd/CVE-2019-19203 (opens in a new tab)x_refsource_MISCx_transferred
- FEDORA-2019-d942abd0d4 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- FEDORA-2019-73197ff9a0 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- https://github.com/tarantula-team/CVE-2019-19203 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2019-19203)Record last updated .