cve-2026-13758

{
  "document": {
    "category": "csaf_vex",
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    "distribution": {
      "text": "Copyright © Red Hat, Inc. All rights reserved.",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
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    },
    "lang": "en",
    "notes": [
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        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.",
        "title": "Terms of Use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://access.redhat.com/security/team/contact/",
      "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.",
      "name": "Red Hat Product Security",
      "namespace": "https://www.redhat.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-13758.json"
      }
    ],
    "title": "CryptX: CryptX for Perl: Message forgery via non-constant time AEAD tag comparison",
    "tracking": {
      "current_release_date": "2026-06-30T10:22:17+00:00",
      "generator": {
        "date": "2026-06-30T10:22:17+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "5.3.0"
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      },
      "id": "CVE-2026-13758",
      "initial_release_date": "2026-06-29T20:42:14.612000+00:00",
      "revision_history": [
        {
          "date": "2026-06-29T20:42:14.612000+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-06-30T03:01:21.645013+00:00",
          "number": "2",
          "summary": "Current version"
        },
        {
          "date": "2026-06-30T10:22:17+00:00",
          "number": "3",
          "summary": "Last generated version"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "category": "vendor",
        "name": "Red Hat",
        "product": {
          "name": "All currently supported Red Hat products",
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          "product_identification_helper": {
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  "vulnerabilities": [
    {
      "cve": "CVE-2026-13758",
      "discovery_date": "2026-06-29T21:00:58.199574+00:00",
      "flags": [
        {
          "label": "vulnerable_code_not_present",
          "product_ids": [
            "red_hat_products"
          ]
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in CryptX for Perl. The library performs a non-constant time comparison of Authenticated Encryption with Associated Data (AEAD) authentication tags in its streaming decryption function. This timing difference creates a tag-verification oracle, allowing a remote attacker to submit multiple candidate tags and measure the timing. By exploiting this, an attacker can recover the expected tag byte by byte, leading to the forgery of messages that appear legitimate.",
          "title": "Vulnerability description"
        },
        {
          "category": "other",
          "text": "Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "known_not_affected": [
          "red_hat_products"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-13758"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-13758",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-13758"
        }
      ],
      "release_date": "2026-06-29T20:42:14.612000+00:00",
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "red_hat_products"
          ]
        }
      ],
      "title": "CryptX: CryptX for Perl: Message forgery via non-constant time AEAD tag comparison"
    }
  ]
}