8.1

CVE-2026-92392: curl Use After Free

CVSS: 8.1v3.1HighAwaiting analysis
AliasesDEBIAN-CVE-2026-92392RHSA-2026:80349RHSA-2026:82895
Published 14-10-2026Last modified 20-10-2026
Open JSON

Vulnerability summary

CVE-2026-92392 is a high (CVSS 8.1) Use After Free vulnerability in curl. EPSS estimates a 0.85% chance of exploitation in the next 30 days, higher than 57.6% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.1/10
010
High · v3.1 (CVE.org)
EPSS score
0.85%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 25 · Downstream 4 · Related 3
CVE-2025-14017CVE-2025-14819CVE-2025-9086CVE-2026-107928CVE-2026-107929CVE-2026-86409

Timeline

  1. 14-10-2026
    PublishedVulnerability first disclosed.
  2. 20-10-2026
    Last modifiedVulnerability information updated.

Description

During an upload, curl mishandles HTTP/2 `RST_STREAM` received from the server (with reason `HTTP_1_1_REQUIRED` or `REFUSED_STREAM`) leading to a use after free of a `struct Curl_easy` object.

CVSS metrics

6 scores · 6 sources · 1 version

EPSS trend

Probability

0.85%

Chance of exploitation in the next 30 days

Percentile

58%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

14-10-202620-10-2026
EPSS score
0.85%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Redhat23 products
  • cargo< 0:1.99.0-1.hum1
  • clippy< 0:1.99.0-1.hum1
  • curl< 0:8.23.0-0.1.hum1
  • libcurl< 0:8.23.0-0.1.hum1
  • libcurl-devel< 0:8.23.0-0.1.hum1
Alpine1 product
  • curl< 8.14.1-r3 | < 8.14.1-r4
Chainguard1 product
  • curl< 8.23.0-r0
Curl1 product
  • curl8.22.0 | 8.21.0 | 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
Debian1 product
  • curl< 8.14.1-2+deb13u7 | All versions (No fix recorded)
Ubuntu1 product
  • curlAll versions (No fix recorded) | < 8.20.0-2ubuntu11.1 | < 8.18.0-1ubuntu2.8
Wolfi1 product
  • curl< 8.23.0-r0

7 vendors · 29 products

References

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