VYPR
Medium severity5.9NVD Advisory· Published May 26, 2023· Updated Jun 17, 2026

CVE-2023-28320

CVE-2023-28320

Description

A denial of service vulnerability exists in curl <v8.1.0 in the way libcurl provides several different backends for resolving host names, selected at build time. If it is built to use the synchronous resolver, it allows name resolves to time-out slow operations using alarm() and siglongjmp(). When doing this, libcurl used a global buffer that was not mutex protected and a multi-threaded application might therefore crash or otherwise misbehave.

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Affected products

36

Patches

Vulnerability mechanics

References

9

News mentions

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