🛡️ CVE-2025-57785 — hiawatha-webserver

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity low, availability none.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

• Attack vector: Network — reachable from anywhere that can route to the service.
• Attack complexity: Low — the attack works reliably, with no preparation.
• Privileges required: None — an unauthenticated stranger can try it.
• User interaction: None — nobody has to be tricked into anything.
• Scope: Unchanged — the damage stays inside the vulnerable component.
• Confidentiality impact: Low — limited, and the attacker does not choose what is affected.
• Integrity impact: Low — limited, and the attacker does not choose what is affected.
• Availability impact: None.

Weakness class

CVE-2025-57785 is classified as CWE-415: Double Free. The same allocation is released twice, corrupting allocator bookkeeping.

Affected software

CVE-2025-57785 is recorded against 1 package.

• hiawatha-webserver

Timeline and source

Published on 26 January 2026 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

gitlab.com

Same weakness in other software

These advisories are the same class of weakness (CWE-415: Double Free) in other software:

• CVE-2023-25801 (8.0 High, published 13 Jul 2026)
• CVE-2025-12343 (3.3 Low, published 18 Feb 2026)
• CVE-2025-13844 (5.3 Medium, published 15 Jan 2026)
• CVE-2025-47396 (7.8 High, published 7 Jan 2026)
• CVE-2025-47356 (7.8 High, published 7 Jan 2026)
• CVE-2025-20786 (6.7 Medium, published 6 Jan 2026)
• CVE-2025-20781 (7.8 High, published 6 Jan 2026)
• CVE-2025-20801 (7.0 High, published 6 Jan 2026)

Details

Affected Packages

References