Investigate in your agent.

Turn this advisory into a focused investigation. Ask your agent to check your project’s versions, explain the evidence, and suggest a compatible fix.

Your agent needs remote MCP support and access to https://cve.new/mcp.

Read the setup guide

Skip to content
cve.newCreate a CVE report
Check your stack
CVE-2026-92388

FTP wildcard write callback mixup

Products / packages curl

Published

Share

Severity and exploitation

Not in CISA KEV

KEV coverage does not rule out exploitation.

KEV checked 14/11/2026, 22:55:31 UTC
CISA-ADP · CVSS:3.1 · 9.1
Assessment vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Severity

critical9.1

CVSS measures technical severity, not the likelihood of an attack.

Known exploitation

Not listed in the checked CISA KEV catalog

Absence from CISA KEV does not rule out attacks.

Public exploit

Exploit reference published

Source-linked evidence; not proof of attacks in the wild or independent validation.

Remediation

Fix status not established

No structured fix or guidance is available here. Check the latest publisher advisory.

What this means

When an FTP wildcard LIST operation fails, libcurl omits the restoration path meant for successful listings, leaving the write callback set to the internal listing parser and the write callback data pointing directly to the easy handle. Subsequent reuse of this handle triggers an immediate crash, and cloning it via curl_easy_duphandle() copies this corrupted state into the duplicate. If the original handle is subsequently freed, executing a transfer on the cloned handle causes a heap use-after-free read against the dangling handle reference; alternatively, reusing the original or cloned…

Source excerpt · curl

Attack conditions

No attack-condition excerpt has been identified here. Review the full source description and references for authentication, network access, and configuration requirements.

Review supporting sources →

Affected versions

Check the exact model, release, and any platform requirements against your installation.

curl · curl

curl

133 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

8.9.1 → through 8.9.1

semver versions

8.9.0 → through 8.9.0

semver versions

8.8.0 → through 8.8.0

semver versions

8.7.1 → through 8.7.1

semver versions

8.7.0 → through 8.7.0

semver versions

8.6.0 → through 8.6.0

semver versions

8.5.0 → through 8.5.0

semver versions

8.4.0 → through 8.4.0

semver versions

8.3.0 → through 8.3.0

semver versions

8.2.1 → through 8.2.1

semver versions

8.2.0 → through 8.2.0

semver versions

8.1.2 → through 8.1.2

semver versions

8.1.1 → through 8.1.1

semver versions

8.1.0 → through 8.1.0

semver versions

8.0.1 → through 8.0.1

semver versions

8.0.0 → through 8.0.0

semver versions

7.88.1 → through 7.88.1

semver versions

7.88.0 → through 7.88.0

semver versions

7.87.0 → through 7.87.0

semver versions

7.86.0 → through 7.86.0

semver versions

7.85.0 → through 7.85.0

semver versions

7.84.0 → through 7.84.0

semver versions

7.83.1 → through 7.83.1

semver versions

7.83.0 → through 7.83.0

semver versions

7.82.0 → through 7.82.0

semver versions

7.81.0 → through 7.81.0

semver versions

7.80.0 → through 7.80.0

semver versions

7.79.1 → through 7.79.1

semver versions

7.79.0 → through 7.79.0

semver versions

7.78.0 → through 7.78.0

semver versions

7.77.0 → through 7.77.0

semver versions

7.76.1 → through 7.76.1

semver versions

7.76.0 → through 7.76.0

semver versions

7.75.0 → through 7.75.0

semver versions

7.74.0 → through 7.74.0

semver versions

7.73.0 → through 7.73.0

semver versions

7.72.0 → through 7.72.0

semver versions

7.71.1 → through 7.71.1

semver versions

7.71.0 → through 7.71.0

semver versions

7.70.0 → through 7.70.0

semver versions

7.69.1 → through 7.69.1

semver versions

7.69.0 → through 7.69.0

semver versions

7.68.0 → through 7.68.0

semver versions

7.67.0 → through 7.67.0

semver versions

7.66.0 → through 7.66.0

semver versions

7.65.3 → through 7.65.3

semver versions

7.65.2 → through 7.65.2

semver versions

7.65.1 → through 7.65.1

semver versions

7.65.0 → through 7.65.0

semver versions

7.64.1 → through 7.64.1

semver versions

7.64.0 → through 7.64.0

semver versions

7.63.0 → through 7.63.0

semver versions

7.62.0 → through 7.62.0

semver versions

7.61.1 → through 7.61.1

semver versions

7.61.0 → through 7.61.0

semver versions

7.60.0 → through 7.60.0

semver versions

7.59.0 → through 7.59.0

semver versions

7.58.0 → through 7.58.0

semver versions

7.57.0 → through 7.57.0

semver versions

7.56.1 → through 7.56.1

semver versions

7.56.0 → through 7.56.0

semver versions

7.55.1 → through 7.55.1

semver versions

7.55.0 → through 7.55.0

semver versions

7.54.1 → through 7.54.1

semver versions

7.54.0 → through 7.54.0

semver versions

7.53.1 → through 7.53.1

semver versions

7.53.0 → through 7.53.0

semver versions

7.52.1 → through 7.52.1

semver versions

7.52.0 → through 7.52.0

semver versions

7.51.0 → through 7.51.0

semver versions

7.50.3 → through 7.50.3

semver versions

7.50.2 → through 7.50.2

semver versions

7.50.1 → through 7.50.1

semver versions

7.50.0 → through 7.50.0

semver versions

7.49.1 → through 7.49.1

semver versions

7.49.0 → through 7.49.0

semver versions

7.48.0 → through 7.48.0

semver versions

7.47.1 → through 7.47.1

semver versions

7.47.0 → through 7.47.0

semver versions

7.46.0 → through 7.46.0

semver versions

7.45.0 → through 7.45.0

semver versions

7.44.0 → through 7.44.0

semver versions

7.43.0 → through 7.43.0

semver versions

7.42.1 → through 7.42.1

semver versions

7.42.0 → through 7.42.0

semver versions

7.41.0 → through 7.41.0

semver versions

7.40.0 → through 7.40.0

semver versions

7.39.0 → through 7.39.0

semver versions

7.38.0 → through 7.38.0

semver versions

7.37.1 → through 7.37.1

semver versions

7.37.0 → through 7.37.0

semver versions

7.36.0 → through 7.36.0

semver versions

7.35.0 → through 7.35.0

semver versions

7.34.0 → through 7.34.0

semver versions

7.33.0 → through 7.33.0

semver versions

7.32.0 → through 7.32.0

semver versions

7.31.0 → through 7.31.0

semver versions

7.30.0 → through 7.30.0

semver versions

7.29.0 → through 7.29.0

semver versions

7.28.1 → through 7.28.1

semver versions

7.28.0 → through 7.28.0

semver versions

7.27.0 → through 7.27.0

semver versions

7.26.0 → through 7.26.0

semver versions

7.25.0 → through 7.25.0

semver versions

7.24.0 → through 7.24.0

semver versions

7.23.1 → through 7.23.1

semver versions

7.23.0 → through 7.23.0

semver versions

7.22.0 → through 7.22.0

semver versions

7.21.7 → through 7.21.7

semver versions

7.21.6 → through 7.21.6

semver versions

7.21.5 → through 7.21.5

semver versions

7.21.4 → through 7.21.4

semver versions

7.21.3 → through 7.21.3

semver versions

7.21.2 → through 7.21.2

semver versions

7.21.1 → through 7.21.1

semver versions

7.21.0 → through 7.21.0

semver versions

unaffected

unknown

Other versions: unaffected

Automatic dependency matching is unavailable for this record. Use the product evidence and publisher’s instructions to check your installation.

What to do

Compare your installed product and version with the affected versions above. A matching product name alone does not confirm exposure.

No structured fix or remediation guidance is available here. Check the full source description and vendor’s latest advisory for a patch or workaround; do not assume another version is safe.

cve.new guidance unless attributed to a publisher. This page does not inspect your installation.

Public exploit evidence

The sources identify public exploit references. We have not independently tested them; their availability does not establish exploitation in the wild.

hackerone.com/reports/4022070 ↗Attributed to CISA-ADP

Original source description

Read the full publisher description

When an FTP wildcard LIST operation fails, libcurl omits the restoration path meant for successful listings, leaving the write callback set to the internal listing parser and the write callback data pointing directly to the easy handle. Subsequent reuse of this handle triggers an immediate crash, and cloning it via curl_easy_duphandle() copies this corrupted state into the duplicate. If the original handle is subsequently freed, executing a transfer on the cloned handle causes a heap use-after-free read against the dangling handle reference; alternatively, reusing the original or cloned handle while changing only CURLOPT_WRITEDATA (and omitting CURLOPT_WRITEFUNCTION) results in type confusion, forcing the internal parser to interpret incoming server response bytes into memory at the application-supplied write data pointer.

References

3 sources
curl.se/docs/CVE-2026-92388.json
Security advisorycurl
curl.se/docs/CVE-2026-92388.html
Security advisorycurl
hackerone.com/reports/4022070
Public exploit referencecurl · CISA-ADP

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-2026-92388

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-416 ↗

CWE-416 Use After Free

CISA-ADP

Related →
Contributing organizations · 2
curl

Assigning organization

2026-10-20
CISA-ADP

Additional data publisher

2026-10-30

Timeline

All times UTC

  1. Advisory published

    Publication date supplied by the source.

  2. Source updated

    Latest modification date supplied by the source.

  3. Last imported by cve.new

    Latest catalog import, not the date we first saw this advisory.

What changed

Follow changes
No substantive changes have been recorded here yet. History starts when cve.new observes a change after tracking is enabled; earlier edits are not reconstructed.

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