CVE-2026-63481Network attack vector

Session cookie disclosure via cross-host redirect

Published Aug 20, 2026 · Updated Aug 20, 2026

Information disclosure in Orange Open Source Hurl 8.0.1 and earlier allows attackers to read session cookies via an attacker-controlled redirect. In packages/hurl/src/http/client.rs, the redirect path clears Authorization, Cookie, and basic-auth state when the host changes but fails to clear RequestSpec.cookies populated from the dedicated [Cookies] section before sending the redirected request. Exposure requires a .hurl file that uses the [Cookies] section and follows a redirect to a different host; raw Cookie headers are stripped, so the consequence is limited to cookie disclosure and any downstream session reuse those cookies permit.

CVSS severity6.9
Medium
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Orange Open Source Hurl 8.0.1 and earlier allows attackers to read session cookies via an attacker-controlled redirect. In packages/hurl/src/http/client.rs, the redirect path clears Authorization, Cookie, and basic-auth state when the host changes but fails to clear RequestSpec.cookies populated from the dedicated [Cookies] section before sending the redirected request. Exposure requires a .hurl file that uses the [Cookies] section and follows a redirect to a different host; raw Cookie headers are stripped, so the consequence is limited to cookie disclosure and any downstream session reuse those cookies permit.

The record

CVE
CVE-2026-63481
Published
Aug 20, 2026
Updated
Aug 20, 2026
Vendor
Orange Open Source
Product
Hurl
Classifications
CWE-201, T1539
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=<= 8.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Orange Open Source · Hurlversion=<= 8.0.1

Published CVSS scores

6.9GitHub, Inc.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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-201Insertion of Sensitive Information Into Sent Data
T1539Steal Web Session Cookie

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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