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CVE-2026-92387high8.1

never-ending loop via server response omission

Impact

By permanently omitting the final control-response line, a malicious FTP, IMAP, POP3, or SMTP server can exploit libcurl and completely bypass its configured transfer timeout mechanism, indefinitely blocking all concurrent transfers bound to the same multi-handle.

Source excerpt · curl

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

curl · curl

curl

17 ranges
curl version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

8.22.0 → through 8.22.0

semver versions

8.21.0 → through 8.21.0

semver versions

8.20.0 → through 8.20.0

semver versions

8.19.0 → through 8.19.0

semver versions

8.18.0 → through 8.18.0

semver versions

8.17.0 → through 8.17.0

semver versions

8.16.0 → through 8.16.0

semver versions

8.15.0 → through 8.15.0

semver versions

8.14.1 → through 8.14.1

semver versions

8.14.0 → through 8.14.0

semver versions

8.13.0 → through 8.13.0

semver versions

8.12.1 → through 8.12.1

semver versions

8.12.0 → through 8.12.0

semver versions

8.11.1 → through 8.11.1

semver versions

8.11.0 → through 8.11.0

semver versions

8.10.1 → through 8.10.1

semver versions

8.10.0 → through 8.10.0

semver versions

unaffected

unknown

Other versions: unaffected

Original source description

By permanently omitting the final control-response line, a malicious FTP, IMAP, POP3, or SMTP server can exploit libcurl and completely bypass its configured transfer timeout mechanism, indefinitely blocking all concurrent transfers bound to the same multi-handle.

Inside the record

Evidence available

Package identity · not supplied
Version evidence
Remediation guidance · not supplied
Weakness classification
Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-92387

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-835 ↗

CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')

CISA-ADP

Related →
Contributing organizations · 2
curl

Assigning organization

2026-10-20
CISA-ADP

Additional data publisher

2026-10-29

What changed

Follow changes
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Large field values are marked as truncated previews. Original source snapshots remain retained.

References

3 sources
curl.se/docs/CVE-2026-92387.json
Security advisorycurl
curl.se/docs/CVE-2026-92387.html
Security advisorycurl
hackerone.com/reports/4022003
exploitcurl · CISA-ADP