# 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.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **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:** No
- **Published:** 20 Aug 2026
- **Updated:** 21 Aug 2026
- **Also known as:** DEBIAN-CVE-2026-63481, GHSA-7w2g-9mf9-324m, UBUNTU-CVE-2026-63481

## 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 (Insertion of Sensitive Information Into Sent Data)

## Which versions are affected by CVE-2026-63481?

2 open source packages ship an affected version, including hurl.


| Package | Ecosystem | 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.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-63481 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-63481 in the wild and no public exploit code.

Affected packages and fixed versions:
- hurl (crates.io): affected all versions up to 8.0.1; no fix listed
- hurl (crates.io): affected all versions up to 8.0.1; no fix listed

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-63481/ (Markdown: https://insights.sbomify.com/CVE-2026-63481/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-63481
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-63481
- OSV: https://osv.dev/vulnerability/CVE-2026-63481

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-63481/
Summaries are generated and may contain mistakes; the official description above is the record.