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🛡️ CVE-2026-8927 on Debian 11 (Root.io) — curl

🔴 CVSS 9.5 — Critical ✅ No Known Exploit OSV
9.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

CVE-2026-8927 in curl - Patched by Root

Root has patched CVE-2026-8927 in the curl package for Root:Debian:11. Multiple fixed versions available.

Distribution advisory

This page covers CVE-2026-8927 as tracked by Debian 11 (Root.io), for the package curl. The fix is available in version 7.74.0-1.3+deb11u16.root.io.17; earlier versions remain affected.

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 high, integrity high, availability none. (rating taken from the base CVE record.)

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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: High — total loss, or loss the attacker controls.
  • Integrity impact: High — total loss, or loss the attacker controls.
  • Availability impact: None.

Weakness class

ROOT-OS-DEBIAN-11-CVE-2026-8927 is classified as CWE-294: Authentication Bypass by Capture-replay. A captured authentication exchange can be replayed later because it is not bound to a single use.

Affected software

ROOT-OS-DEBIAN-11-CVE-2026-8927 is recorded against 2 packages.

  • curl (fixed in 7.74.0-1.3+deb11u16.root.io.17)
  • rootio-curl (fixed in 7.74.0-1.3+deb11u16.root.io.17)

Timeline and source

Published on 20 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

Other advisories for this package

curl has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-294: Authentication Bypass by Capture-replay) in other software:

Details

Severity CRITICAL
CVSS Score 9.5
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-08-20
Updated 2026-08-20
Modified 2026-08-20
Fix URL N/A

Affected Packages

Software From version Fixed in
curl — 7.74.0-1.3+deb11u16.root.io.17
rootio-curl — 7.74.0-1.3+deb11u16.root.io.17

References

N/A

Exploit Protection

Are you running curl?

ROOT-OS-DEBIAN-11-CVE-2026-8927 carries CVSS 9.5 Critical rating. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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