Vulnerability-Lookup

CVE-2026-13455 (GCVE-0-2026-13455)

Vulnerability from cvelistv5 – Published: 2026-06-30 15:19 – Updated: 2026-06-30 15:57

Title

PostgreSQL Anonymizer: Unrestricted function can leak the secret salt

Summary

PostgreSQL Anonymizer contains a vulnerability that allows unprivileged masked users to repeatedly call the anon.hash() function and collects (seed, hash_output) pairs to perform an offline brute-force attack and deduce the salt. The problem is resolved in PostgreSQL Anonymizer 3.1.2 and later versions

Severity

4.3 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-30 15:57 UTC

CWE

CWE-328 - Use of Weak Hash

Assigner

PostgreSQL redhat root

References

1 reference

URL	Tags
https://gitlab.com/dalibo/postgresql_anonymizer/-…

Impacted products

1 product

Vendor	Product	Version	CPE status
DALIBO	PostgreSQL Anonymizer	Affected: 1 , < 3.1.2 (semver)	guessed

Credits

The PostgreSQL Anonymizer project thanks user Sarath Kumar for reporting this problem.

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-13455

Vulnerability from fkie_nvd - Published: 2026-06-30 16:16 - Updated: 2026-07-06 20:23

Severity

4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Summary

References

	URL	Tags
	f86ef6dc-4d3a-42ad-8f28-e6d5547a5007	https://gitlab.com/dalibo/postgresql_anonymizer/-/issues/649	Vendor Advisory

Impacted products

	Vendor	Product	Version
	dalibo	postgresql_anonymizer	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "PostgreSQL Anonymizer",
          "vendor": "DALIBO",
          "versions": [
            {
              "lessThan": "3.1.2",
              "status": "affected",
              "version": "1",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007"
    }
  ],
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    {
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  "descriptions": [
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    }
  ],
  "id": "CVE-2026-13455",
  "lastModified": "2026-07-06T20:23:09.193",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
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          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
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GHSA-8CH8-93Q8-MHM3

Vulnerability from github – Published: 2026-06-30 18:31 – Updated: 2026-06-30 18:31

Details

Severity

4.3 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-13455"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-328"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-30T16:16:44Z",
    "severity": "MODERATE"
  },
  "details": "PostgreSQL Anonymizer contains a vulnerability that allows unprivileged masked users to repeatedly call the anon.hash() function and collects (seed, hash_output) pairs to perform an offline brute-force attack and deduce the salt. The problem is resolved in PostgreSQL Anonymizer 3.1.2 and later versions",
  "id": "GHSA-8ch8-93q8-mhm3",
  "modified": "2026-06-30T18:31:36Z",
  "published": "2026-06-30T18:31:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-13455"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.com/dalibo/postgresql_anonymizer/-/issues/649"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

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-2026-13455 (GCVE-0-2026-13455)

FKIE_CVE-2026-13455

GHSA-8CH8-93Q8-MHM3

Tags

Sightings

Nomenclature

Related by attack behaviour