CVE-2023-27534 (GCVE-0-2023-27534)

Vulnerability from cvelistv5 – Published: 2023-03-30 00:00 – Updated: 2025-04-23 16:23
VLAI
Summary
A path traversal vulnerability exists in curl <8.0.0 SFTP implementation causes the tilde (~) character to be wrongly replaced when used as a prefix in the first path element, in addition to its intended use as the first element to indicate a path relative to the user's home directory. Attackers can exploit this flaw to bypass filtering or execute arbitrary code by crafting a path like /~2/foo while accessing a server with a specific user.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-23 13:29 UTC
CWE
  • CWE-22 - Path Traversal (CWE-22)
Assigner
References
Impacted products
Vendor Product Version
n/a https://github.com/curl/curl Affected: Fixed in 8.0.0
Show details on NVD website
To clipboard 

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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-28T07:39:12+00:00",
      "cve": "CVE-2023-27534",
      "id": "CVE-2023-27534",
      "initial_release_date": "2023-03-20T00:00:00+00:00",
      "product_status:fixed": "86",
      "product_status:known_affected": "17",
      "product_status:known_not_affected": "113",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "curl: SFTP path ~ resolving discrepancy",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-27534.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-26T16:48:45Z",
      "cve": "CVE-2023-27534",
      "id": "CVE-2023-27534",
      "initial_release_date": "2023-03-21T03:13:44Z",
      "product_status:known_affected": "349",
      "product_status:recommended": "342",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2023-27534",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-27534.json",
      "version": "74"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.