CVE-2026-53781 Summarize < 0.17.0 Disk Exhaustion via Uncapped Media Download
Remote attackers can exhaust host disk space by serving unbounded media responses to the Summarize CLI, bypassing size limits.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-53781?
CVE-2026-53781 is a medium-severity denial of service vulnerability in steipete summarize, published on 11 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Summarize before 0.17.0 contains a resource exhaustion vulnerability that allows remote attackers to cause disk exhaustion by serving media responses that bypass the enforced size limit through missing or misreported Content-Length headers, chunked transfer encoding, or failed HEAD requests. Attackers who control a podcast feed or media URL can stream an unbounded response to local storage via the temp-file download path, exhausting disk or system resources on the host running the CLI.
Weakness: CWE-770
Which versions are affected by CVE-2026-53781?
2 open source packages ship an affected version, including @steipete/summarize-core.
| Package | Affected | Fixed in |
|---|---|---|
@steipete/summarize-core npm | All versions | 0.17.0 |
@steipete/summarize-core npm | All versions | 0.17.0 |
How do I fix CVE-2026-53781?
Upgrade @steipete/summarize-core to 0.17.0 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-53781 being exploited?
There is no known exploitation of CVE-2026-53781 in the wild and no public exploit code.
Sources
Also known as GHSA-q9xm-f36c-xm3q.