Vulnerability-Lookup

CVE-2026-14895 (GCVE-0-2026-14895)

Vulnerability from cvelistv5 – Published: 2026-07-07 22:12 – Updated: 2026-07-08 14:05

Title

String::Util versions before 1.36 for Perl are susceptible to a regular expression denial of service

Summary

String::Util versions before 1.36 for Perl are susceptible to a regular expression denial of service. The trim and rtrim functions stripped trailing whitespace with s/\s*$//u. Because \s* matches greedily and the $ anchor fails whenever a non-whitespace character follows the whitespace, the regex engine retries the match at each offset of a long whitespace run, producing quadratic backtracking. The fix replaces \s*$ with \s+$. Any caller that passes untrusted input to trim or rtrim can trigger CPU exhaustion with a string containing a long run of whitespace.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-08 14:05 UTC

CWE

CWE-1333 - Inefficient Regular Expression Complexity

Assigner

CPANSec redhat root

References

4 references

URL	Tags
https://github.com/scottchiefbaker/String-Util/co…	patch
https://metacpan.org/release/BAKERSCOT/String-Uti…
https://github.com/scottchiefbaker/String-Util/releases	release-notes
http://www.openwall.com/lists/oss-security/2026/0…

Impacted products

1 product

Vendor	Product	Version	CPE status
BAKERSCOT	String::Util	Affected: 0 , < 1.36 (custom)	guessed

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-14895

Vulnerability from fkie_nvd - Published: 2026-07-07 23:16 - Updated: 2026-07-08 15:56

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

References

	URL	Tags
	9b29abf9-4ab0-4765-b253-1875cd9b441e	https://github.com/scottchiefbaker/String-Util/commit/f8150867aaeb8f57c59601aefb2193f2caed8745.patch
	9b29abf9-4ab0-4765-b253-1875cd9b441e	https://github.com/scottchiefbaker/String-Util/releases
	9b29abf9-4ab0-4765-b253-1875cd9b441e	https://metacpan.org/release/BAKERSCOT/String-Util-1.36/diff/BAKERSCOT/String-Util-1.35#lib/String/Util.pm
	af854a3a-2127-422b-91ae-364da2661108	http://www.openwall.com/lists/oss-security/2026/07/07/18

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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GHSA-VM32-9CFF-WGH2

Vulnerability from github – Published: 2026-07-08 00:37 – Updated: 2026-07-08 15:31

Details

String::Util versions before 1.36 for Perl are susceptible to a regular expression denial of service.

The trim and rtrim functions stripped trailing whitespace with s/\s$//u. Because \s matches greedily and the $ anchor fails whenever a non-whitespace character follows the whitespace, the regex engine retries the match at each offset of a long whitespace run, producing quadratic backtracking. The fix replaces \s*$ with \s+$.

Any caller that passes untrusted input to trim or rtrim can trigger CPU exhaustion with a string containing a long run of whitespace.

Severity

7.5 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Show details on source website

JSON

To clipboard

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  "affected": [],
  "aliases": [
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  ],
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    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-07T23:16:54Z",
    "severity": "HIGH"
  },
  "details": "String::Util versions before 1.36 for Perl are susceptible to a regular expression denial of service.\n\nThe trim and rtrim functions stripped trailing whitespace with s/\\s*$//u. Because \\s* matches greedily and the $ anchor fails whenever a non-whitespace character follows the whitespace, the regex engine retries the match at each offset of a long whitespace run, producing quadratic backtracking. The fix replaces \\s*$ with \\s+$.\n\nAny caller that passes untrusted input to trim or rtrim can trigger CPU exhaustion with a string containing a long run of whitespace.",
  "id": "GHSA-vm32-9cff-wgh2",
  "modified": "2026-07-08T15:31:54Z",
  "published": "2026-07-08T00:37:56Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-14895"
    },
    {
      "type": "WEB",
      "url": "https://github.com/scottchiefbaker/String-Util/commit/f8150867aaeb8f57c59601aefb2193f2caed8745.patch"
    },
    {
      "type": "WEB",
      "url": "https://github.com/scottchiefbaker/String-Util/releases"
    },
    {
      "type": "WEB",
      "url": "https://metacpan.org/release/BAKERSCOT/String-Util-1.36/diff/BAKERSCOT/String-Util-1.35#lib/String/Util.pm"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/07/07/18"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

UBUNTU-CVE-2026-14895 (CVE-2026-14895)

Vulnerability from osv_ubuntu – Published: 2026-07-07 23:16 – Updated: 2026-07-09 19:32 – Source website

Details

String::Util versions before 1.36 for Perl are susceptible to a regular expression denial of service. The trim and rtrim functions stripped trailing whitespace with s/\s$//u. Because \s matches greedily and the $ anchor fails whenever a non-whitespace character follows the whitespace, the regex engine retries the match at each offset of a long whitespace run, producing quadratic backtracking. The fix replaces \s*$ with \s+$. Any caller that passes untrusted input to trim or rtrim can trigger CPU exhaustion with a string containing a long run of whitespace.

Severity

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-14895	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-14895	REPORT
	https://lists.security.metacpan.org/cve-announce/…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libstring-util-perl",
            "binary_version": "1.34-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "libstring-util-perl",
        "purl": "pkg:deb/ubuntu/libstring-util-perl@1.34-2?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.34-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libstring-util-perl",
            "binary_version": "1.35-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "libstring-util-perl",
        "purl": "pkg:deb/ubuntu/libstring-util-perl@1.35-1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.35-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libstring-util-perl",
            "binary_version": "1.35-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "libstring-util-perl",
        "purl": "pkg:deb/ubuntu/libstring-util-perl@1.35-1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.35-1"
      ]
    }
  ],
  "aliases": [],
  "details": "String::Util versions before 1.36 for Perl are susceptible to a regular expression denial of service. The trim and rtrim functions stripped trailing whitespace with s/\\s*$//u. Because \\s* matches greedily and the $ anchor fails whenever a non-whitespace character follows the whitespace, the regex engine retries the match at each offset of a long whitespace run, producing quadratic backtracking. The fix replaces \\s*$ with \\s+$. Any caller that passes untrusted input to trim or rtrim can trigger CPU exhaustion with a string containing a long run of whitespace.",
  "id": "UBUNTU-CVE-2026-14895",
  "modified": "2026-07-09T19:32:05Z",
  "published": "2026-07-07T23:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-14895"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-14895"
    },
    {
      "type": "REPORT",
      "url": "https://lists.security.metacpan.org/cve-announce/msg/41625636/"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-14895"
  ]
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.

Action not permitted

CVE-2026-14895 (GCVE-0-2026-14895)

FKIE_CVE-2026-14895

GHSA-VM32-9CFF-WGH2

UBUNTU-CVE-2026-14895 (CVE-2026-14895)

Tags

Sightings

Nomenclature

Related by attack behaviour