VulnerabilityPublished 20 Oct 2026

CVE-2026-92390: curl · External Control of File Name or Path

Affects curlSource CVE Database V5

Not known to be exploited.

Data as of 26 Oct 2026, 13:47 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.2% chance of exploitation in 30 days – higher than 11% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

Exploitation evidence

Disclosed: evidence found.
CVE published 20 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
curlcurl	Affected >=8.22.0 <=8.22.0 >=8.21.0 <=8.21.0 >=8.20.0 <=8.20.0 >=8.19.0 <=8.19.0 >=8.18.0 <=8.18.0 >=8.17.0 <=8.17.0 >=8.16.0 <=8.16.0 >=8.15.0 <=8.15.0 >=8.14.1 <=8.14.1 >=8.14.0 <=8.14.0 >=8.13.0 <=8.13.0 >=8.12.1 <=8.12.1 >=8.12.0 <=8.12.0 >=8.11.1 <=8.11.1 >=8.11.0 <=8.11.0 >=8.10.1 <=8.10.1 >=8.10.0 <=8.10.0 >=8.9.1 <=8.9.1 >=8.9.0 <=8.9.0 >=8.8.0 <=8.8.0 >=8.7.1 <=8.7.1 >=8.7.0 <=8.7.0 >=8.6.0 <=8.6.0 >=8.5.0 <=8.5.0 >=8.4.0 <=8.4.0 >=8.3.0 <=8.3.0 >=8.2.1 <=8.2.1 >=8.2.0 <=8.2.0 >=8.1.2 <=8.1.2 >=8.1.1 <=8.1.1 >=8.1.0 <=8.1.0 >=8.0.1 <=8.0.1 >=8.0.0 <=8.0.0 >=7.88.1 <=7.88.1 >=7.88.0 <=7.88.0 >=7.87.0 <=7.87.0 >=7.86.0 <=7.86.0 >=7.85.0 <=7.85.0 >=7.84.0 <=7.84.0 >=7.83.1 <=7.83.1 >=7.83.0 <=7.83.0 >=7.82.0 <=7.82.0 >=7.81.0 <=7.81.0 >=7.80.0 <=7.80.0 >=7.79.1 <=7.79.1 >=7.79.0 <=7.79.0 >=7.78.0 <=7.78.0 >=7.77.0 <=7.77.0 >=7.76.1 <=7.76.1 >=7.76.0 <=7.76.0 >=7.75.0 <=7.75.0 >=7.74.0 <=7.74.0 >=7.73.0 <=7.73.0 >=7.72.0 <=7.72.0 >=7.71.1 <=7.71.1 >=7.71.0 <=7.71.0 >=7.70.0 <=7.70.0 >=7.69.1 <=7.69.1 >=7.69.0 <=7.69.0 >=7.68.0 <=7.68.0 >=7.67.0 <=7.67.0 >=7.66.0 <=7.66.0 >=7.65.3 <=7.65.3 >=7.65.2 <=7.65.2 >=7.65.1 <=7.65.1 >=7.65.0 <=7.65.0 >=7.64.1 <=7.64.1 >=7.64.0 <=7.64.0 >=7.63.0 <=7.63.0 >=7.62.0 <=7.62.0 >=7.61.1 <=7.61.1 >=7.61.0 <=7.61.0 >=7.60.0 <=7.60.0 >=7.59.0 <=7.59.0 >=7.58.0 <=7.58.0 >=7.57.0 <=7.57.0 >=7.56.1 <=7.56.1 >=7.56.0 <=7.56.0 >=7.55.1 <=7.55.1 >=7.55.0 <=7.55.0 >=7.54.1 <=7.54.1 >=7.54.0 <=7.54.0 >=7.53.1 <=7.53.1 >=7.53.0 <=7.53.0 >=7.52.1 <=7.52.1 >=7.52.0 <=7.52.0 >=7.51.0 <=7.51.0 >=7.50.3 <=7.50.3 >=7.50.2 <=7.50.2 >=7.50.1 <=7.50.1 >=7.50.0 <=7.50.0 >=7.49.1 <=7.49.1 >=7.49.0 <=7.49.0 >=7.48.0 <=7.48.0 >=7.47.1 <=7.47.1 >=7.47.0 <=7.47.0 >=7.46.0 <=7.46.0 >=7.45.0 <=7.45.0 >=7.44.0 <=7.44.0 >=7.43.0 <=7.43.0 >=7.42.1 <=7.42.1 >=7.42.0 <=7.42.0 >=7.41.0 <=7.41.0 >=7.40.0 <=7.40.0 >=7.39.0 <=7.39.0 >=7.38.0 <=7.38.0 >=7.37.1 <=7.37.1 >=7.37.0 <=7.37.0 >=7.36.0 <=7.36.0 >=7.35.0 <=7.35.0 >=7.34.0 <=7.34.0 >=7.33.0 <=7.33.0 >=7.32.0 <=7.32.0 >=7.31.0 <=7.31.0 >=7.30.0 <=7.30.0 >=7.29.0 <=7.29.0 >=7.28.1 <=7.28.1 >=7.28.0 <=7.28.0 >=7.27.0 <=7.27.0 >=7.26.0 <=7.26.0 >=7.25.0 <=7.25.0 >=7.24.0 <=7.24.0 >=7.23.1 <=7.23.1 >=7.23.0 <=7.23.0 >=7.22.0 <=7.22.0 >=7.21.7 <=7.21.7 >=7.21.6 <=7.21.6 >=7.21.5 <=7.21.5 >=7.21.4 <=7.21.4 >=7.21.3 <=7.21.3 >=7.21.2 <=7.21.2 >=7.21.1 <=7.21.1 >=7.21.0 <=7.21.0 >=7.20.1 <=7.20.1 >=7.20.0 <=7.20.0	Fixed in–

Description

When invoked with `--remote-header-name` (`-J`), curl fails to preserve its documented anti-clobbering protection if an intermediate 103 Early Hints response precedes the final HTTP response, or if an `ETag` header is processed before `Content-Disposition` under `--etag-save`. This flaw allows an HTTP(S) server to overwrite an existing local file specified in the `Content-Disposition` header despite the presence of the `-J` non-overwrite constraint.

CWE-73External Control of File Name or Path (opens in a new tab)
Base weaknessLikelihood of exploit: HighOWASP Top 10 A06:2025: Insecure Design (opens in a new tab)
The product allows user input to control or influence paths or file names that are used in filesystem operations.
Architecture and Design
When the set of filenames is limited or known, create a mapping from a set of fixed input values (such as numeric IDs) to the actual filenames, and reject all other inputs. For example, ID 1 could map to "inbox.txt" and ID 2 could map to "profile.txt".
Architecture and Design · Operation
Run your code in a "jail" or similar sandbox environment that enforces strict boundaries between the process and the operating system. This may effectively restrict all access to files within a particular directory.
Architecture and Design
For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks…
OWASP Cheat Sheets
XML Security (opens in a new tab)
Mass Assignment (opens in a new tab)
Secure Design Principles (opens in a new tab)
OWASP ASVS 4.0.3
V12.3.2 (opens in a new tab)
V13.3.1 (opens in a new tab)
V5.1.4 (opens in a new tab)
Attack patterns
Subverting Environment Variable Values (opens in a new tab)
Leverage Alternate Encoding (opens in a new tab)
Using Slashes and URL Encoding Combined to Bypass Validation Logic (opens in a new tab)
URL Encoding (opens in a new tab)
Manipulating Web Input to File System Calls (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

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Exploitation evidence

What to do

Affected software

Description

WeaknessesCWE-73

Technical details

References

Community reviews

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