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Fencer Intel
no cvss —

GO-2026-5781 json

Uncatchable stack-overflow denial of service in rsc.io/pdf

published 3mo ago modified 3mo ago

cvss
—
not scored
cisa kev
Not listed
not in CISA's catalog
epss
—
no score, EPSS covers CVEs only
public exploits
0
none known

Summary

pdf.Open and PDF object resolution in rsc.io/pdf recurse without bound on nested arrays and dictionaries. A sufficiently deeply nested document exhausts the goroutine stack limit and triggers a fatal, uncatchable stack overflow. Any service that parses untrusted PDFs with rsc.io/pdf can therefore be taken down by a single small input.

Is GO-2026-5781 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Affected packages

ecosystem package affected fixed in
go rsc.io/pdf
all versions
 no fix listed

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.