CVE-2026-8257
WebAssembly Binaryen BrOn wasm-ir-builder.cpp makeBrOn assertion
Description
A vulnerability was detected in WebAssembly Binaryen up to 117. This issue affects the function IRBuilder::makeBrOn of the file src/wasm/wasm-ir-builder.cpp of the component BrOn Parser. Performing a manipulation results in reachable assertion. The attack needs to be approached locally. The exploit is now public and may be used. The patch is named 1251efbc1ea471c1311d2726b2bbe061ff2a291c. It is suggested to install a patch to address this issue.
INFO
Published Date :
May 11, 2026, 12:30 a.m.
Last Modified :
May 11, 2026, 12:30 a.m.
Remotely Exploit :
No
Source :
VulDB
Affected Products
The following products are affected by CVE-2026-8257
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Install the patch to address the BrOn Parser issue.
- Update WebAssembly Binaryen to the latest version.
- Review and apply the provided patch identifier.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2026-8257 vulnerability anywhere in the article.