CVE-2026-63481 Hurl: Cookies in Cookies section leak when redirecting to a different host
An attacker-controlled redirect can leak authentication or session cookies from the Cookies section to a different host in Hurl.
- 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
- None listed
What is CVE-2026-63481?
CVE-2026-63481 is a medium-severity vulnerability in Orange-OpenSource hurl, published on 20 Aug 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
Hurl is a command line tool that runs and tests HTTP requests defined in plain text files. In version 8.0.1 and earlier, the redirect handling in packages/hurl/src/http/client.rs strips Authorization and Cookie headers and basic-auth credentials when a redirect changes host, but it carries RequestSpec.cookies created from the dedicated [Cookies] section into the redirected request. An attacker-controlled redirect can therefore receive authentication or session cookies that should remain scoped to the original host. Cookies supplied through a raw Cookie header are stripped and are not affected by this specific path. This issue is reported as fixed in version 8.1.0.
Weakness: CWE-201
Which versions are affected by CVE-2026-63481?
2 open source packages ship an affected version, including hurl.
| Package | Affected | Fixed in |
|---|---|---|
hurl crates.io | All versions to 8.0.1 | None |
hurl crates.io | All versions to 8.0.1 | None |
How do I fix CVE-2026-63481?
No fix has been published for CVE-2026-63481 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-63481 being exploited?
There is no known exploitation of CVE-2026-63481 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-63481, GHSA-7w2g-9mf9-324m, UBUNTU-CVE-2026-63481.