medium5.3
CVE-2025-15536
Open Chinese Convert has Out-of-bounds Write
Impact
A weakness has been identified in BYVoid OpenCC up to 1.1.9. This vulnerability affects the function opencc::MaxMatchSegmentation of the file src/MaxMatchSegmentation.cpp. This manipulation causes heap-based buffer overflow. The attack is restricted to local execution. The exploit has been made available to the public and could be used for attacks. Patch name: 345c9a50ab07018f1b4439776bad78a0d40778ec. To fix this issue, it is recommended to deploy a patch.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | opencc | <= 1.1.9 | 1.2.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Byvoid | Open Chinese Convert | through 1.1.9 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/BYVoid/OpenCC/
- https://github.com/BYVoid/OpenCC/commit/345c9a50ab07018f1b4439776bad78a0d40778ec
- https://github.com/BYVoid/OpenCC/issues/997
- https://github.com/BYVoid/OpenCC/pull/1005
- https://github.com/oneafter/1222/blob/main/repro
- https://vuldb.com/?ctiid.341708
- https://vuldb.com/?id.341708
- https://vuldb.com/?submit.733347
- https://github.com/advisories/GHSA-5pr6-crvp-2j9f
- https://nvd.nist.gov/vuln/detail/CVE-2025-15536