9.1

CVE-2026-8926: curl Insufficiently Protected Credentials

CVSS: 9.1v3.1CriticalModified
AliasesALPINE-CVE-2026-8926UBUNTU-CVE-2026-8926DEBIAN-CVE-2026-8926
Published 03-07-2026Last modified 15-09-2026
Open JSON

Vulnerability summary

CVE-2026-8926 is a critical (CVSS 9.1) Insufficiently Protected Credentials vulnerability in curl. EPSS estimates a 0.44% chance of exploitation in the next 30 days, higher than 37.4% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.1/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.44%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 13 · Related 11
OPENSUSE-SU-2026:11230-1OPENSUSE-SU-2026:21774-1RHSA-2026:29017RHSA-2026:34975RHSA-2026:69125RHSA-2026:72506

Timeline

  1. 03-07-2026
    PublishedVulnerability first disclosed.
  2. 15-09-2026
    Last modifiedVulnerability information updated.

Description

When asking curl to use a `.netrc` file to find credentials and at the same time specifying a URL with a username (without a password), like `https://user@example.com/`, curl could wrongly get and use the password for *another* user set in the `.netrc` file for that host if such a one exists and there is no match for the specified user.

CVSS metrics

6 scores · 6 sources · 1 version

EPSS trend

Probability

0.44%

Chance of exploitation in the next 30 days

Percentile

37%

Versus all other CVEs

30-day change

0.00 pp

From 0.44% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.44%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (hackerone.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Chainguard10 products
  • eco-python-curl< 8.21.0-r0
  • eco-python-curl-minimal< 8.21.0-r0
  • eco-python-curl-minimal-bin< 8.21.0-r0
  • eco-python-curl-minimal-dev< 8.21.0-r0
  • eco-python-curl-minimal-doc< 8.21.0-r0
Alpine1 product
  • curl≥ 8.11.1, < 8.22.0-r0 | ≥ 8.11.1, < 8.21.0-r0
Curl1 product
  • curl≥ 8.11.1, < 8.14.2 | ≥ 8.15.0, < 8.16.1 | ≥ 8.17.0, < 8.20.1 | ≥ e9b9bbac22c26cf67316fa8e6c6b9e831af31949, < 4ae1d7cc2643e4773a136395f12bc02fc6867854 | 8.20.0 | 8.19.0 | 8.18.0 | 8.17.0 | 8.16.0 | 8.15.0 | 8.14.1 | 8.14.0 | 8.13.0 | 8.12.1 | 8.12.0 | 8.11.1
Debian1 product
  • curlAll versions (No fix recorded) | < 8.21.0~rc2-1
Haxx1 product
  • curl≥ 8.11.1, < 8.21.0
Ubuntu1 product
  • curl< 8.14.1-2ubuntu1.4 | < 8.18.0-1ubuntu2.2

6 vendors · 15 products

References

11 links
Show all 11 references