An integer overflow in curl's URL API results in a buffer overflow in libcurl 7.62.0 to and including 7.64.1.
Priority LOW 26CWE-131Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat.
Summary
An integer overflow in curl's URL API results in a buffer overflow in libcurl 7.62.0 to and including 7.64.1.
Why it matters now
EPSS 0.05659 93rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Red Hat: 2 advisories
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
Red Hat 2 advisories
- RHSA-2020:4384 Released 2020-10-28 · Red Hat rating ModerateRed Hat JBoss Core Services Apache HTTP Server 2.4.37 SP5 security update
- Red Hat JBoss Core Services on RHEL 6 Server jbcs-httpd24-apr-1.6.3-104.jbcs.el6, jbcs-httpd24-apr-devel-1.6.3-104.jbcs.el6, jbcs-httpd24-apr-util-1.6.1-75.jbcs.el6 +38
- Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-apr-1.6.3-104.jbcs.el7, jbcs-httpd24-apr-devel-1.6.3-104.jbcs.el7, jbcs-httpd24-apr-util-1.6.1-75.jbcs.el7 +39
- RHSA-2020:4383 Released 2020-10-28 · Red Hat rating ModerateRed Hat JBoss Core Services Apache HTTP Server 2.4.37 SP5 security update
- Red Hat JBoss Core Services
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
curl — FEDORA-2019-697de0501f
2 records Highest priority Priority HIGH 1 HIGH, 1 LOW
Other records, highest priority first
- TI-2019-03845 Heap-based buffer overflow in curlPriority HIGH 67
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat JBoss Core Services | Fixed | RHSA-2020:4383 |
| Red Hat JBoss Core Services on RHEL 6 Server | Fixed | RHSA-2020:4384 |
| Red Hat JBoss Core Services on RHEL 7 Server | Fixed | RHSA-2020:4384 |
Not affected: 10 products
- .NET Core 1.0 on Red Hat Enterprise Linux
- .NET Core 1.1 on Red Hat Enterprise Linux
- .NET Core 2.1 on Red Hat Enterprise Linux
- .NET Core 2.2 on Red Hat Enterprise Linux
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat JBoss Web Server 5
- Red Hat Software Collections
Timeline
- 2026-10-02 Threatist record created from CVE-2019-5435
- 2026-10-03 Alias added: GHSA-fp2w-w5rc-8fxj
References
Advisory 2
More curl vulnerabilities
- TI-2023-19922 Out-of-bounds write in curl CVSS 3.1CRITICAL 9.8
- TI-2026-16162 Negotiate ambient user conn reuse CVSS 3.1CRITICAL 9.8
- TI-2026-10231 cross-origin Digest auth state leak CVSS 3.1CRITICAL 9.8
- TI-2026-09063 HTTP/2 stream-dependency tree UAF CVSS 3.1CRITICAL 9.8
- TI-2026-07976 stale proxy password leak CVSS 3.1CRITICAL 9.8
- TI-2026-07845 SASL double-free CVSS 3.1CRITICAL 9.8
Sources
- CVE-2019-5435 · CVE Program
- CVE-2019-5435 · NVD
- FIRST EPSS
- GHSA-fp2w-w5rc-8fxj · GitHub Advisory Database · CC BY 4.0
- CVE-2019-5435 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences