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

Vulnerability from cvelistv5 – Published: 2023-03-30 00:00 – Updated: 2026-09-18 15:03
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 CPE status
n/a https://github.com/curl/curl Affected: Fixed in 8.0.0
Show details on NVD website
To clipboard 

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        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "A path traversal vulnerability exists in curl \u003c8.0.0 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\u0027s 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."
          }
        ],
        "id": "CVE-2023-27534",
        "lastModified": "2026-06-17T05:45:25.323",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
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                "scope": "UNCHANGED",
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                "role": "CISA Coordinator",
                "timestamp": "2025-04-23T13:29:22.277594Z",
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        },
        "published": "2023-03-30T20:15:07.427",
        "references": [
          {
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            "tags": [
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              "Third Party Advisory"
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        ],
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        "vulnStatus": "Modified",
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          {
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              {
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                "value": "CWE-22"
              }
            ],
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          },
          {
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                "value": "CWE-22"
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            "type": "Primary"
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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": "2026-08-29T02:15:28Z",
      "cve": "CVE-2023-27534",
      "id": "CVE-2023-27534",
      "initial_release_date": "2023-03-21T03:13:44Z",
      "product_status:known_affected": "359",
      "product_status:recommended": "340",
      "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": "76"
    }
  }
}



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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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.