Vulnerability-Lookup

GHSA-HHVR-8M24-QQR3

Vulnerability from github – Published: 2026-10-20 18:09 – Updated: 2026-10-20 18:09

Summary

ApostropheCMS: Cross-domain session token in URL confers session takeover

Details

Summary Apostrophe's cross-domain session migration emits a single-use session token as a URL query parameter and stores it in the Mongo cache. Any client that presents the token silently adopts the target user's full session (including passport.user) with no credentials.

Details packages/apostrophe/modules/@apostrophecms/i18n/index.js: - Token generation on cross-host/locale flows (L479–487) and passport-bridge cross-locale redirect (passport-bridge/index.js L557–593) places the token in the URL. - acceptCrossDomainSessionToken (L258–298) reads ?aposCrossDomainSessionToken, Object.assigns the stored session (cookie + passport.user) onto req.session, then nulls the cache entry under namespace @apostrophecms/i18n:cross-domain-sessions. - Middleware without before: is registered for every URL (express findModuleMiddlewareAndRoutes L820–879); verified with APOS_LOG_ALL_ROUTES=1.

PoC

# 0) Anonymous baseline: admin-only draft → 403
# 1) Admin logs in legitimately (token minted into redirect URL):
curl -c admin.cookies -X POST -H "Content-Type: application/json" \
     --data '{"username":"admin","password":"adminpassword","session":true}' \
     http://localhost:3100/api/v1/@apostrophecms/login/login
# 2) Attacker with NO credentials visits the leaked token URL:
curl -c atk.cookies "http://localhost:3100/?aposCrossDomainSessionToken=HUNTING_TOKEN"
#    → 302 Location: / ; attacker now holds a vulnlab.sid SID cookie
# 3) Attacker reads admin-only content via adopted session:
curl -b atk.cookies ".../api/v1/@apostrophecms/page/d576242ve1dkzb12jiiabujd:en:draft"
#    → 200  adopted-session read -> Secret Private Page | secretData = TOP-SECRET-VALUE-abc123
# 4) Cache entry consumed (single-use): {"value":null}

Impact Session hijack / account takeover of the migrated user for anyone who obtains the token, inheriting all the account's privileges. Exposure is realistic precisely because the token is in URLs: server/proxy/browser-access logs, browser history, and the Referer header when the destination host differs from the source (the intended use case). Single-use limits but does not remove the window.

Remediation — Deliver the token via a short-lived HttpOnly signed SameSite cookie rather than a query parameter; bind consumption to the exact source/destination host pair, expire in seconds, and never log it.

Severity

5.3 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

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JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "apostrophe"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.33.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "@apostrophecms/passport-bridge"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.6.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-113669"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-598"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-10-20T18:09:01Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "**Summary**\nApostrophe\u0027s cross-domain session migration emits a single-use session token as a URL query parameter and stores it in the Mongo cache. Any client that presents the token silently adopts the target user\u0027s full session (including `passport.user`) with no credentials.\n\n**Details**\n`packages/apostrophe/modules/@apostrophecms/i18n/index.js`:\n- Token generation on cross-host/locale flows (L479\u2013487) and passport-bridge cross-locale redirect (`passport-bridge/index.js` L557\u2013593) places the token in the URL.\n- `acceptCrossDomainSessionToken` (L258\u2013298) reads `?aposCrossDomainSessionToken`, `Object.assign`s the stored session (cookie + `passport.user`) onto `req.session`, then nulls the cache entry under namespace `@apostrophecms/i18n:cross-domain-sessions`.\n- Middleware without `before:` is registered for every URL (express `findModuleMiddlewareAndRoutes` L820\u2013879); verified with `APOS_LOG_ALL_ROUTES=1`.\n\n**PoC**\n```\n# 0) Anonymous baseline: admin-only draft \u2192 403\n# 1) Admin logs in legitimately (token minted into redirect URL):\ncurl -c admin.cookies -X POST -H \"Content-Type: application/json\" \\\n     --data \u0027{\"username\":\"admin\",\"password\":\"adminpassword\",\"session\":true}\u0027 \\\n     http://localhost:3100/api/v1/@apostrophecms/login/login\n# 2) Attacker with NO credentials visits the leaked token URL:\ncurl -c atk.cookies \"http://localhost:3100/?aposCrossDomainSessionToken=HUNTING_TOKEN\"\n#    \u2192 302 Location: / ; attacker now holds a vulnlab.sid SID cookie\n# 3) Attacker reads admin-only content via adopted session:\ncurl -b atk.cookies \".../api/v1/@apostrophecms/page/d576242ve1dkzb12jiiabujd:en:draft\"\n#    \u2192 200  adopted-session read -\u003e Secret Private Page | secretData = TOP-SECRET-VALUE-abc123\n# 4) Cache entry consumed (single-use): {\"value\":null}\n```\n\n**Impact**\nSession hijack / account takeover of the migrated user for anyone who obtains the token, inheriting all the account\u0027s privileges. Exposure is realistic precisely because the token is in URLs: server/proxy/browser-access logs, browser history, and the Referer header when the destination host differs from the source (the intended use case). Single-use limits but does not remove the window.\n\n**Remediation** \u2014 Deliver the token via a short-lived HttpOnly signed SameSite cookie rather than a query parameter; bind consumption to the exact source/destination host pair, expire in seconds, and never log it.",
  "id": "GHSA-hhvr-8m24-qqr3",
  "modified": "2026-10-20T18:09:01Z",
  "published": "2026-10-20T18:09:01Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-hhvr-8m24-qqr3"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/apostrophecms/apostrophe"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "ApostropheCMS: Cross-domain session token in URL confers session takeover"
}

CVE-2026-113669 (GCVE-0-2026-113669)

Vulnerability from cvelistv5 – Published: 2026-10-20 17:35 – Updated: 2026-10-20 17:35

Title

ApostropheCMS: Cross-domain session token in URL confers session takeover

Summary

ApostropheCMS is an open-source Node.js content management system. Prior to 4.33.0 of ApostropheCMS and 1.6.1 of passport-bridge, cross-host or cross-locale session migration places a single-use bearer session token in a redirect URL. A client that obtains and redeems a still-valid, unconsumed token before its first use can adopt the associated session, including through the passport-bridge cross-locale flow. This issue is fixed in ApostropheCMS 4.33.0 and passport-bridge 1.6.1.

Severity

5.3 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

CWE

CWE-598 - Use of GET Request Method With Sensitive Query Strings

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7626 records in the last 180 days details

References

4 references

URL	Tags
https://github.com/apostrophecms/apostrophe/secur…	x_refsource_CONFIRM
https://github.com/apostrophecms/apostrophe/commi…	x_refsource_MISC
https://github.com/apostrophecms/apostrophe/commi…	x_refsource_MISC
https://github.com/apostrophecms/apostrophe/relea…	x_refsource_MISC

Impacted products

2 products

Vendor	Product	Version
apostrophecms	apostrophe	Affected: < 4.33.0
@apostrophecms	passport-bridge	Affected: < 1.6.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "apostrophe",
          "vendor": "apostrophecms",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 4.33.0"
            }
          ]
        },
        {
          "product": "passport-bridge",
          "vendor": "@apostrophecms",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.6.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "ApostropheCMS is an open-source Node.js content management system. Prior to 4.33.0 of ApostropheCMS and 1.6.1 of passport-bridge, cross-host or cross-locale session migration places a single-use bearer session token in a redirect URL. A client that obtains and redeems a still-valid, unconsumed token before its first use can adopt the associated session, including through the passport-bridge cross-locale flow. This issue is fixed in ApostropheCMS 4.33.0 and passport-bridge 1.6.1."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "LOW",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "LOW"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-598",
              "description": "CWE-598: Use of GET Request Method With Sensitive Query Strings",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-20T17:35:40.136Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-hhvr-8m24-qqr3",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-hhvr-8m24-qqr3"
        },
        {
          "name": "https://github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25ed0943845ce",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25ed0943845ce"
        },
        {
          "name": "https://github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25df1f7130b350",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25df1f7130b350"
        },
        {
          "name": "https://github.com/apostrophecms/apostrophe/releases/tag/apostrophe@4.33.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/apostrophecms/apostrophe/releases/tag/apostrophe@4.33.0"
        }
      ],
      "source": {
        "advisory": "GHSA-hhvr-8m24-qqr3",
        "discovery": "UNKNOWN"
      },
      "title": "ApostropheCMS: Cross-domain session token in URL confers session takeover"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-113669",
    "datePublished": "2026-10-20T17:35:40.136Z",
    "dateReserved": "2026-10-20T14:27:46.642Z",
    "dateUpdated": "2026-10-20T17:35:40.136Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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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.

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