CWE-1333

{
  "affected": [],
  "aliases": [
    "CVE-2026-0967"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-26T21:17:00Z",
    "severity": "LOW"
  },
  "details": "A flaw was found in libssh. A remote attacker, by controlling client configuration files or known_hosts files, could craft specific hostnames that when processed by the `match_pattern()` function can lead to inefficient regular expression backtracking. This can cause timeouts and resource exhaustion, resulting in a Denial of Service (DoS) for the client.",
  "id": "GHSA-6jpg-fr24-wpvf",
  "modified": "2026-05-19T15:31:20Z",
  "published": "2026-03-26T21:31:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-0967"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:18160"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:18683"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-0967"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2436981"
    },
    {
      "type": "WEB",
      "url": "https://www.libssh.org/2026/02/10/libssh-0-12-0-and-0-11-4-security-releases"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2026-0668"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-07T18:15:52Z",
    "severity": "MODERATE"
  },
  "details": "Inefficient Regular Expression Complexity vulnerability in Wikimedia Foundation MediaWiki - VisualData Extension allows Regular Expression Exponential Blowup.This issue affects MediaWiki - VisualData Extension: 1.45.",
  "id": "GHSA-6p52-pvr6-5x2c",
  "modified": "2026-01-07T21:31:55Z",
  "published": "2026-01-07T18:30:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-0668"
    },
    {
      "type": "WEB",
      "url": "https://gerrit.wikimedia.org/r/q/I4ff2737c9f0ba805267d1fc8296e7cff61241ee3"
    },
    {
      "type": "WEB",
      "url": "https://gerrit.wikimedia.org/r/q/I893a9fca694a2613e29e149dea2d76d7f06063e5"
    },
    {
      "type": "WEB",
      "url": "https://gerrit.wikimedia.org/r/q/Ie08d9a8ceb2c9a22a635cfc27964353f14072dbf"
    },
    {
      "type": "WEB",
      "url": "https://gerrit.wikimedia.org/r/q/Ifbf9c2ade621226e14fe852f3217293772bf8bb8"
    },
    {
      "type": "WEB",
      "url": "https://phabricator.wikimedia.org/T387008"
    }
  ],
  "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:L",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "transformers"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.48.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-12720"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-03-21T17:43:02Z",
    "nvd_published_at": "2025-03-20T10:15:29Z",
    "severity": "MODERATE"
  },
  "details": "A Regular Expression Denial of Service (ReDoS) vulnerability was identified in the huggingface/transformers library, specifically in the file tokenization_nougat_fast.py. The vulnerability occurs in the post_process_single() function, where a regular expression processes specially crafted input. The issue stems from the regex exhibiting exponential time complexity under certain conditions, leading to excessive backtracking. This can result in significantly high CPU usage and potential application downtime, effectively creating a Denial of Service (DoS) scenario. The affected version is v4.46.3.",
  "id": "GHSA-6rvg-6v2m-4j46",
  "modified": "2025-03-21T17:43:02Z",
  "published": "2025-03-20T12:32:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-12720"
    },
    {
      "type": "WEB",
      "url": "https://github.com/huggingface/transformers/commit/deac971c469bcbb182c2e52da0b82fb3bf54cccf"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/huggingface/transformers"
    },
    {
      "type": "WEB",
      "url": "https://huntr.com/bounties/4bed1214-7835-4252-a853-22bbad891f98"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Transformers Regular Expression Denial of Service (ReDoS) vulnerability"
}

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "markdown-it"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "12.3.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-21670"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333",
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-01-10T21:50:05Z",
    "nvd_published_at": "2022-01-10T21:15:00Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\n\nSpecial patterns with length \u003e 50K chars can slow down parser significantly.\n\n```js\nconst md = require(\u0027markdown-it\u0027)();\n\nmd.render(`x ${\u0027 \u0027.repeat(150000)} x  \\nx`);\n```\n\n\n### Patches\n\nUpgrade to v12.3.2+\n\n### Workarounds\n\nNo.\n\n### References\n\nFix + test sample: https://github.com/markdown-it/markdown-it/commit/ffc49ab46b5b751cd2be0aabb146f2ef84986101\n",
  "id": "GHSA-6vfc-qv3f-vr6c",
  "modified": "2022-01-19T18:25:52Z",
  "published": "2022-01-12T22:20:22Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/markdown-it/markdown-it/security/advisories/GHSA-6vfc-qv3f-vr6c"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-21670"
    },
    {
      "type": "WEB",
      "url": "https://github.com/markdown-it/markdown-it/commit/ffc49ab46b5b751cd2be0aabb146f2ef84986101"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/markdown-it/markdown-it"
    }
  ],
  "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:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Uncontrolled Resource Consumption in markdown-it"
}

{
  "affected": [],
  "aliases": [
    "CVE-2024-4025"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-06-20T19:15:35Z",
    "severity": "MODERATE"
  },
  "details": "A Denial of Service (DoS) condition has been discovered in GitLab CE/EE affecting all versions from 7.10 prior before 16.11.5, version 17.0 before 17.0.3, and 17.1 before 17.1.1. It is possible for an attacker to cause a denial of service using a crafted markdown page.",
  "id": "GHSA-6w53-65xx-mgj9",
  "modified": "2025-06-20T21:32:07Z",
  "published": "2025-06-20T21:32:07Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-4025"
    },
    {
      "type": "WEB",
      "url": "https://hackerone.com/reports/2024974"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/457474"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2024-6038"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333",
      "CWE-625"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-06-27T19:15:19Z",
    "severity": "HIGH"
  },
  "details": "A Regular Expression Denial of Service (ReDoS) vulnerability exists in the latest version of gaizhenbiao/chuanhuchatgpt. The vulnerability is located in the filter_history function within the utils.py module. This function takes a user-provided keyword and attempts to match it against chat history filenames using a regular expression search. Due to the lack of sanitization or validation of the keyword parameter, an attacker can inject a specially crafted regular expression, leading to a denial of service condition. This can cause severe degradation of service performance and potential system unavailability.",
  "id": "GHSA-6w57-8p2p-2r2x",
  "modified": "2025-10-15T15:30:19Z",
  "published": "2024-06-27T21:32:08Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-6038"
    },
    {
      "type": "WEB",
      "url": "https://github.com/gaizhenbiao/chuanhuchatgpt/commit/fcdd5fd6b05ef537a1db185ab115758d87e1ba3f"
    },
    {
      "type": "WEB",
      "url": "https://huntr.com/bounties/d41cca0a-82bc-4cbf-a52a-928d304fb42d"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "fast-xml-parser"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.1.3"
            },
            {
              "fixed": "4.2.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-34104"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333",
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-06-06T17:33:13Z",
    "nvd_published_at": "2023-06-06T18:15:11Z",
    "severity": "HIGH"
  },
  "details": "### Impact\n\"fast-xml-parser\" allows special characters in entity names, which are not escaped or sanitized. Since the entity name is used for creating a regex for searching and replacing entities in the XML body, an attacker can abuse it for DoS attacks. By crafting an entity name that results in an intentionally bad performing regex and utilizing it in the entity replacement step of the parser, this can cause the parser to stall for an indefinite amount of time.\n\n### Patches\nThe problem has been resolved in v4.2.4\n\n### Workarounds\nAvoid using DOCTYPE parsing by `processEntities: false` option.",
  "id": "GHSA-6w63-h3fj-q4vw",
  "modified": "2026-03-09T15:58:38Z",
  "published": "2023-06-06T17:33:13Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/NaturalIntelligence/fast-xml-parser/security/advisories/GHSA-6w63-h3fj-q4vw"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-34104"
    },
    {
      "type": "WEB",
      "url": "https://github.com/NaturalIntelligence/fast-xml-parser/commit/39b0e050bb909e8499478657f84a3076e39ce76c"
    },
    {
      "type": "WEB",
      "url": "https://github.com/NaturalIntelligence/fast-xml-parser/commit/a4bdced80369892ee413bf08e28b78795a2b0d5b"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/NaturalIntelligence/fast-xml-parser"
    }
  ],
  "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"
    }
  ],
  "summary": "fast-xml-parser vulnerable to Regex Injection via Doctype Entities"
}

{
  "affected": [],
  "aliases": [
    "CVE-2026-60075"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-30T14:17:02Z",
    "severity": "HIGH"
  },
  "details": "Date::Manip versions through 6.99 for Perl allow CPU exhaustion via quadratic backtracking in the unanchored time substitution in _parse_time.\n\n_parse_time removes a time from anywhere in the string with the unanchored substitution `s/$timerx/ /`, where $timerx is an auto-generated alternation of time patterns reached through a leading `(?:$atrx|^|\\s+)`. The engine therefore retries the match at every position of an interior whitespace run: at each start position the leading `\\s+` consumes the rest of the run greedily, the time alternation fails because the run holds no digits, and the engine backtracks a space at a time across the run before advancing the start position, which is quadratic in the length of the run. No time need be present in the string for this to happen, only a long run of whitespace, and the parse time rises about fourfold for each doubling of the run: a few kilobytes of whitespace costs seconds of CPU per parse and tens of kilobytes costs minutes.\n\nAny caller that passes an untrusted string of unbounded length to ParseDate(), Date::Manip::Date-\u003eparse() or -\u003eparse_time() can be made to spend unbounded CPU in a single parse, a denial of service.",
  "id": "GHSA-6w78-p685-p2f6",
  "modified": "2026-08-21T09:32:02Z",
  "published": "2026-07-30T15:31:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-60075"
    },
    {
      "type": "WEB",
      "url": "https://github.com/SBECK-github/Date-Manip/pull/55"
    },
    {
      "type": "WEB",
      "url": "https://metacpan.org/release/SBECK/Date-Manip-6.99/source/lib/Date/Manip/Date.pm#L1526"
    },
    {
      "type": "WEB",
      "url": "https://metacpan.org/release/SBECK/Date-Manip-6.99/source/lib/Date/Manip/Date.pm#L1811"
    },
    {
      "type": "WEB",
      "url": "https://security.metacpan.org/patches/D/Date-Manip/6.99/CVE-2026-60075-r1.patch"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/07/30/20"
    }
  ],
  "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"
    }
  ]
}

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 7.7.7"
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "thumbor"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.8.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-53500"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-31T18:36:03Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "## Summary\n\nThe `ALLOWED_SOURCES` configuration is meant to restrict which hosts Thumbor\u0027s HTTP loader may fetch images from. Plain-string entries in that list (the overwhelming majority of real-world and documented configurations) are passed directly to `re.match()` without escaping. Because `.` is a regex wildcard, every dot in a domain name becomes a bypass vector: `s.glbimg.com` silently matches `sXglbimgYcom`, `sAglbimg.com`, and any other hostname that differs only at a dot position. This undermines the primary SSRF defence that `ALLOWED_SOURCES` is intended to provide.\n\n## Affected component\n\n`thumbor/loaders/http_loader.py` \u2014 `validate()`\n\n## Proof of concept\n\n```python\nimport re\nfrom thumbor.config import Config\nfrom thumbor.context import Context\nfrom thumbor.loaders import http_loader as loader\n\nconfig = Config()\nconfig.ALLOWED_SOURCES = [\"s.glbimg.com\"]   # typical user config\nctx = Context(None, config, None)\n\n# These should be blocked \u2014 both return True due to the unescaped dot\nprint(loader.validate(ctx, \"http://sXglbimgYcom/secret.jpg\"))  # True \u2190 bypass\nprint(loader.validate(ctx, \"http://sAglbimg.com/secret.jpg\"))  # True \u2190 bypass\n\n# Legitimate origin \u2014 correctly allowed\nprint(loader.validate(ctx, \"http://s.glbimg.com/logo.jpg\"))    # True \u2190 correct\n```\n\n## Root cause\n\n`thumbor/loaders/http_loader.py` (before fix):\n\n```python\nfor pattern in context.config.ALLOWED_SOURCES:\n    if isinstance(pattern, Pattern):\n        match = url\n    else:\n        pattern = f\"^{pattern}$\"   # \u003c-- dots not escaped, act as regex wildcard\n        match = res.hostname\n\n    if re.match(pattern, match):\n        return True\n```\n\n## Impact\n\nAn attacker who can influence the image source URL passed to Thumbor can fetch images from arbitrary hosts, bypassing the `ALLOWED_SOURCES` allowlist.\n\n**Preconditions:**\n\n- `ALLOWED_SOURCES` contains at least one plain-string entry (the common case; all official documentation examples use plain strings).\n- The attacker can supply or influence the image URL \u2014 true whenever  `ALLOW_UNSAFE_URL = True` (the default), or when the application forwards user input to a signed URL endpoint.\n\n## Fix\n\nApply `re.escape()` to plain-string patterns before compiling them, so every\ncharacter is matched literally:\n\n```python\nelse:\n    pattern = f\"^{re.escape(pattern)}$\"   # dots and other metacharacters are now literal\n    match = res.hostname\n```\n\nThis is a one-call addition with no breaking change for correctly written configurations. Users who need real regular-expression behaviour should supply a compiled pattern (`re.compile(r\"s\\.glbimg\\.com\")`), which is already handled by the existing `isinstance(pattern, Pattern)` branch and is unaffected by this change.\n\nThe `ALLOWED_SOURCES` docstring in `config.py` was also updated to document the two-mode behaviour explicitly.",
  "id": "GHSA-6x26-6r6f-m537",
  "modified": "2026-07-31T18:36:03Z",
  "published": "2026-07-31T18:36:03Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/thumbor/thumbor/security/advisories/GHSA-6x26-6r6f-m537"
    },
    {
      "type": "WEB",
      "url": "https://github.com/thumbor/thumbor/commit/68876715350c6c8f49c324e5515e64908830aed7"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/thumbor/thumbor"
    },
    {
      "type": "WEB",
      "url": "https://github.com/thumbor/thumbor/releases/tag/7.8.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Thumbor treats ALLOWED_SOURCES string patterns as unescaped regex, allowing hostname bypass via wildcard dot"
}

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "torbot"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.0.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-45813"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-10-19T12:33:03Z",
    "nvd_published_at": "2023-10-18T21:15:09Z",
    "severity": "MODERATE"
  },
  "details": "### Summary\n_The torbot.modules.validators.validate_link function uses the python-validators URL validation regex. This particular regular expression has an exponential complexity which allows an attacker to cause an application crash using a well-crafted argument.._\n\n### Details\nhttps://github.com/DedSecInside/TorBot/blob/d2b89192379ad033ffc7044efff26e16ccc02d5a/torbot/modules/validators.py#L13\n\nAn attacker can use a well-crafted URL argument to exploit the vulnerability in the regular expression and cause a Denial of Service on the system.\n\n### PoC\nI have uploaded a secret gist containing a PoC (https://gist.github.com/ikkebr/6041055314f1cfb8e65b2a1acbaae12c). By adding one special character at the end of the user argument of the URL, the regular expression will take exponentially longer to compute.\n\nFor a string of size 10k, the regex will take 0.01s without the well-crafted URL and 1.3s with the well-crafted URL exploit.\nFor a string of size 50k, the regex will take 0.03s without the well-crafted URL and 35s with the well-crafted URL exploit.\nFor a string of size 100k, the regex will take 0.05s without the well-crafted URL and over 200s with the well-crafted URL exploit.\n\nThe regular expression used in the validators library versions [0.20, 0.11] is vulnerable to this attack. Version 0.21 appears to be unaffected, but it no longer contains a single regular expression.\n\n### Impact\nAn attacker could exploit this vulnerability to cause a denial of service or increased resource usage.\n",
  "id": "GHSA-72qw-p7hh-m3ff",
  "modified": "2023-10-19T12:33:03Z",
  "published": "2023-10-19T12:33:03Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/DedSecInside/TorBot/security/advisories/GHSA-72qw-p7hh-m3ff"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-45813"
    },
    {
      "type": "WEB",
      "url": "https://github.com/DedSecInside/TorBot/commit/ef6e06bc7785355b1701d5524eb4550441086ac4"
    },
    {
      "type": "WEB",
      "url": "https://gist.github.com/ikkebr/6041055314f1cfb8e65b2a1acbaae12c"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/DedSecInside/TorBot"
    },
    {
      "type": "WEB",
      "url": "https://github.com/DedSecInside/TorBot/blob/d2b89192379ad033ffc7044efff26e16ccc02d5a/torbot/modules/validators.py#L13"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "TorBot vulnerable to Inefficient Regular Expression Complexity in validate_link"
}