This report was translated by AI; nobody has reviewed the translation yet. Original language: Slovak.

[TLP:CLEAR] Curl fixes 2 vulnerabilities

Curl fixes 2 vulnerabilities with version 8.16.0 [1][2].

curl - cookie tampering (CVE-2025-9086)
CVSS 7.4 (High)

An unauthenticated remote attacker can, under certain unpredictable circumstances, overwrite a cookie with the "Secure" attribute or carry out a DoS attack [1].

The vulnerability is present in product:

  • Curl; >=7.31.0, <8.16.0;

CVSS: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H

More information:

The vulnerability was publicly disclosed 10. 9. 2025.

curl - proxy cache poisoning (CVE-2025-10148)
CVSS 5.9 (Medium)

An unauthenticated remote attacker can, under certain specific circumstances, spoof WebSocket communication and thereby poison the cache of a proxy that treats the communication as valid HTTP content. Exploiting the vulnerability requires unencrypted communication using the WebSocket protocol [2].

The vulnerability is present in product:

  • Curl; >=8.11.0, <8.16.0;

CVSS: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

More information:

The vulnerability was publicly disclosed 10. 9. 2025.


By CESNET, z.s.p.o. Martin Krajči on 15. 9. 2025.

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