【低危】openbabel 安全更新（GHSA-rxpr-wq63-jr7p）

安全情报快照 · 风险级别：低危 · CVSS：5.5 · CVE-2026-3408 · GHSA-rxpr-wq63-jr7p

先看结论

openbabel存在安全风险，< 3.2.0 受影响，建议升级至 3.2.0。

影响范围

生态	组件	受影响版本	首个修复版本
pip	`openbabel`	< 3.2.0	3.2.0

处置建议

优先将 openbabel 升级至 3.2.0 或更高版本；升级前请结合业务依赖完成兼容性验证。

上游技术详情（原文）

Summary

A memory-safety vulnerability in Open Babel's CDXML file format parser
caused a NULL pointer dereference when reading a crafted input file.

Details

The flaw was in OBAtom::GetExplicitValence as called from the CDXML
parser. A malformed fragment caused the parser to invoke the method
on a NULL atom pointer.

Impact

Open Babel is a C++ library and CLI used to read and write chemistry
file formats; it is shipped by Linux distributions and embedded in
services that may parse untrusted input. Triggering this vulnerability
requires the victim to open a malicious CDXML file with the obabel
tool, the OBConversion API, or any of the language bindings (Python,
Ruby, Java, R, Perl, C#, PHP).

Affected versions

All releases up to and including 3.1.1.

Patched version

3.2.0 (released 2026-05-26).

Patch

Fix commit: https://github.com/openbabel/openbabel/commit/e23a224b
Tracked in #2862.

A minimized reproducer for this CVE is checked in under
test/files/fuzz_regress/ and is exercised on every CI build under
ASAN+UBSAN by the fuzzregresstest harness.

Credit

Reported by Vedant Madane (@VedantMadane) via VulDB.

来源与许可

本页自动同步 GitHub Advisory Database 的公开数据，并保留上游原文供核验；不宣称原创分析。数据许可：CC-BY-4.0。