CVE-2026-53782 Summarize < 0.17.0 SSRF via podcast:transcript URL fetch

Medium 6.3 Published Updated
Exploited in the wild
Not known
Fix
Available

What is CVE-2026-53782?

CVE-2026-53782 is a medium-severity vulnerability in steipete summarize, published on 11 Jun 2026.

Official description

Summarize before 0.17.0 contains a server-side request forgery vulnerability that allows attackers who control a podcast RSS feed to direct the host to fetch transcript content from loopback addresses, link-local addresses, RFC 1918 private ranges, or other reserved destinations by supplying malicious podcast:transcript URL values. Attackers can bypass protections through DNS rebinding and redirect-based techniques, as redirect targets are not revalidated and hostnames are not resolved before request dispatch, exposing internal service responses through the summarization flow.

Weakness: CWE-918

Which versions are affected by CVE-2026-53782?

2 open source packages ship an affected version, including @steipete/summarize.

PackageAffectedFixed in
@steipete/summarize npmAll versions0.17.0
@steipete/summarize npmAll versions0.17.0

How do I fix CVE-2026-53782?

Upgrade @steipete/summarize to 0.17.0 or later.

Is CVE-2026-53782 being exploited?

There is no known exploitation of CVE-2026-53782 in the wild and no public exploit code.

Sources

Also known as GHSA-3vx2-vqx8-jxfg.

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