3.7

CVE-2023-38546: curl

CVSS: 3.7v3.1LowModified
AliasesALPINE-CVE-2023-38546SUSE-SU-2023:4045-1RHSA-2023:7540
Published 18-10-2023Last modified 14-10-2026
Open JSON

Vulnerability summary

CVE-2023-38546 is a low (CVSS 3.7) vulnerability in curl. EPSS estimates a 5.96% chance of exploitation in the next 30 days, higher than 93.2% of scored vulnerabilities.

Overall risk
16/100
0100
Low · default modelHow is this calculated?
CVSS score
3.7/10
010
Low · v3.1 (NVD)
EPSS score
5.96%
0%100%
Low · -0.25 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 14 · Related 9
DLA-3613-1DSA-5523-1MGASA-2023-0288OPENSUSE-SU-2024:13325-1RHSA-2023:5700RHSA-2023:5763

Timeline

  1. 18-10-2023
    PublishedVulnerability first disclosed.
  2. 14-10-2026
    Last modifiedVulnerability information updated.

Description

This flaw allows an attacker to insert cookies at will into a running program using libcurl, if the specific series of conditions are met. libcurl performs transfers. In its API, an application creates "easy handles" that are the individual handles for single transfers. libcurl provides a function call that duplicates en easy handle called [curl_easy_duphandle](https://curl.se/libcurl/c/curl_easy_duphandle.html). If a transfer has cookies enabled when the handle is duplicated, the cookie-enable state is also cloned - but without cloning the actual cookies. If the source handle did not read any cookies from a specific file on disk, the cloned version of the handle would instead store the file name as `none` (using the four ASCII letters, no quotes). Subsequent use of the cloned handle that does not explicitly set a source to load cookies from would then inadvertently load cookies from a file named `none` - if such a file exists and is readable in the current directory of the program using libcurl. And if using the correct file format of course.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

5.96%

Chance of exploitation in the next 30 days

Percentile

93%

Versus all other CVEs

30-day change

-0.25 pp

From 6.21% on 19-09-2026

19-09-202619-10-2026
EPSS score
5.96%

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

No weakness data has been published for this record.

Affected systems

Redhat10 products
  • curl< 0:7.61.1-30.el8_8.6
  • curl-debuginfo< 0:7.61.1-30.el8_8.6
  • curl-debugsource< 0:7.61.1-30.el8_8.6
  • curl-minimal-debuginfo< 0:7.61.1-30.el8_8.6
  • libcurl< 0:7.61.1-30.el8_8.6
Suse4 products
  • curl&distro=SUSE Linux Enterprise Micro 5.1< 7.66.0-150200.4.60.1
  • curl&distro=SUSE Linux Enterprise Micro 5.2< 7.66.0-150200.4.60.1
  • curl&distro=SUSE Manager Proxy 4.2< 7.66.0-150200.4.60.1
  • curl&distro=SUSE Manager Server 4.2< 7.66.0-150200.4.60.1
Chainguard3 products
  • curl< 8.4.0-r0
  • curl-rustls< 8.4.0-r0
  • libcurl4All versions (No fix recorded)
Wolfi3 products
  • curl< 8.4.0-r0
  • curl-rustls< 8.4.0-r0
  • libcurl4All versions (No fix recorded)
Alpine1 product
  • curl< 8.4.0-r0
Curl1 product
  • curl≥ 8.4.0, < 8.4.0
Debian1 product
  • curl< 7.88.1-10+deb12u4 | < 8.3.0-3
Haxx1 product
Ubuntu1 product
  • curl< 7.68.0-1ubuntu2.20 | < 7.81.0-1ubuntu1.14 | < 8.2.1-1ubuntu3.1 | < 7.35.0-1ubuntu2.20+esm17 | < 7.47.0-1ubuntu2.19+esm10 | < 7.58.0-2ubuntu3.24+esm2

9 vendors · 25 products

References

35 links
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