CWE-352
AllowedCross-Site Request Forgery (CSRF)
Abstraction: Compound · Status: Stable
The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.
14265 vulnerabilities reference this CWE, most recent first.
GHSA-2QW7-J9XQ-5QJQ
Vulnerability from github – Published: 2024-08-12 18:30 – Updated: 2024-08-13 15:31FrogCMS v0.9.5 was discovered to contain a Cross-Site Request Forgery (CSRF) vulnerability via /admin/?/layout/delete/1
{
"affected": [],
"aliases": [
"CVE-2024-42623"
],
"database_specific": {
"cwe_ids": [
"CWE-352"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-08-12T17:15:17Z",
"severity": "HIGH"
},
"details": "FrogCMS v0.9.5 was discovered to contain a Cross-Site Request Forgery (CSRF) vulnerability via /admin/?/layout/delete/1",
"id": "GHSA-2qw7-j9xq-5qjq",
"modified": "2024-08-13T15:31:34Z",
"published": "2024-08-12T18:30:48Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-42623"
},
{
"type": "WEB",
"url": "https://github.com/Kirtoc/cms/tree/main/8/readme.md"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-2QXP-XMX6-CQ4F
Vulnerability from github – Published: 2023-02-08 00:30 – Updated: 2023-02-15 22:00Cross-Site Request Forgery (CSRF) in GitHub repository wallabag/wallabag prior to 2.5.4.
{
"affected": [
{
"package": {
"ecosystem": "Packagist",
"name": "wallabag/wallabag"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.5.4"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2023-0735"
],
"database_specific": {
"cwe_ids": [
"CWE-352"
],
"github_reviewed": true,
"github_reviewed_at": "2023-02-08T18:13:53Z",
"nvd_published_at": "2023-02-07T23:15:00Z",
"severity": "MODERATE"
},
"details": "Cross-Site Request Forgery (CSRF) in GitHub repository wallabag/wallabag prior to 2.5.4.",
"id": "GHSA-2qxp-xmx6-cq4f",
"modified": "2023-02-15T22:00:35Z",
"published": "2023-02-08T00:30:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-0735"
},
{
"type": "WEB",
"url": "https://github.com/wallabag/wallabag/commit/268372dbbdd7ef87b84617fdebf95d0a86caf7dc"
},
{
"type": "PACKAGE",
"url": "https://github.com/wallabag/wallabag"
},
{
"type": "WEB",
"url": "https://huntr.dev/bounties/8bc78cb1-b10b-4152-842e-ceb999fc5508"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
}
],
"summary": "Cross-Site Request Forgery (CSRF) in wallabag/wallabag"
}
GHSA-2R2P-4CGF-HV7H
Vulnerability from github – Published: 2026-04-22 14:52 – Updated: 2026-04-22 14:52Summary
The local HTTP server started by engram server (binding 127.0.0.1:7337 by default) was exposed to any browser origin with no authentication unless ENGRAM_API_TOKEN was explicitly set. Combined with Access-Control-Allow-Origin: * on every response and a body parser that did not require Content-Type: application/json, this allowed a malicious web page the developer visited to:
- Exfiltrate the local knowledge graph via
GET /queryandGET /stats(function names, file layout, recorded decisions/mistakes). - Inject persistent prompt-injection payloads via
POST /learn, which wrotemistake/decisionnodes that were later surfaced as system-reminders to the user's AI coding agent on every future session and file edit.
Severity: High — confidentiality + persistent indirect prompt injection against the user's coding agent.
Affected versions
engramx >= 1.0.0, < 2.0.2 — any version that shipped the HTTP server.
Patched in
engramx@2.0.2
Workarounds (if you cannot upgrade)
- Do not run
engram serverorengram ui. - If developers must, set
ENGRAM_API_TOKENto a long random value and terminate the server before browsing the web.
Remediation (applied in 2.0.2)
- Fail-closed auth on every non-public route — Bearer header or HttpOnly cookie, constant-time comparison, 256-bit auto-generated token at
~/.engram/http-server.token(0600). - Wildcard CORS removed entirely; default is no CORS headers. Opt-in allowlist via
ENGRAM_ALLOWED_ORIGINS. - Host + Origin validation — rejects DNS rebinding and Host spoofing.
Content-Type: application/jsonenforced on mutations — blocks the text/plain CSRF vector./ui?token=bootstrap withSec-Fetch-Sitegate — prevents cross-origin oracle probing.
Credit
Discovered and responsibly disclosed by @gabiudrescu in engram issue #7.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "engramx"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.0.2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-1188",
"CWE-306",
"CWE-352",
"CWE-942"
],
"github_reviewed": true,
"github_reviewed_at": "2026-04-22T14:52:03Z",
"nvd_published_at": null,
"severity": "HIGH"
},
"details": "### Summary\n\nThe local HTTP server started by `engram server` (binding `127.0.0.1:7337` by default) was exposed to any browser origin with no authentication unless `ENGRAM_API_TOKEN` was explicitly set. Combined with `Access-Control-Allow-Origin: *` on every response and a body parser that did not require `Content-Type: application/json`, this allowed a malicious web page the developer visited to:\n\n1. **Exfiltrate** the local knowledge graph via `GET /query` and `GET /stats` (function names, file layout, recorded decisions/mistakes).\n2. **Inject persistent prompt-injection payloads** via `POST /learn`, which wrote `mistake`/`decision` nodes that were later surfaced as system-reminders to the user\u0027s AI coding agent on every future session and file edit.\n\nSeverity: **High** \u2014 confidentiality + persistent indirect prompt injection against the user\u0027s coding agent.\n\n### Affected versions\n\n`engramx` \u003e= 1.0.0, \u003c 2.0.2 \u2014 any version that shipped the HTTP server.\n\n### Patched in\n\n`engramx@2.0.2`\n\n### Workarounds (if you cannot upgrade)\n\n- Do **not** run `engram server` or `engram ui`.\n- If developers must, set `ENGRAM_API_TOKEN` to a long random value and terminate the server before browsing the web.\n\n### Remediation (applied in 2.0.2)\n\n1. Fail-closed auth on every non-public route \u2014 Bearer header or HttpOnly cookie, constant-time comparison, 256-bit auto-generated token at `~/.engram/http-server.token` (0600).\n2. Wildcard CORS removed entirely; default is no CORS headers. Opt-in allowlist via `ENGRAM_ALLOWED_ORIGINS`.\n3. Host + Origin validation \u2014 rejects DNS rebinding and Host spoofing.\n4. `Content-Type: application/json` enforced on mutations \u2014 blocks the text/plain CSRF vector.\n5. `/ui?token=` bootstrap with `Sec-Fetch-Site` gate \u2014 prevents cross-origin oracle probing.\n\n### Credit\n\nDiscovered and responsibly disclosed by @gabiudrescu in engram issue #7.",
"id": "GHSA-2r2p-4cgf-hv7h",
"modified": "2026-04-22T14:52:03Z",
"published": "2026-04-22T14:52:03Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/NickCirv/engram/security/advisories/GHSA-2r2p-4cgf-hv7h"
},
{
"type": "WEB",
"url": "https://github.com/NickCirv/engram/issues/7"
},
{
"type": "PACKAGE",
"url": "https://github.com/NickCirv/engram"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "engram: HTTP server CORS wildcard + auth-off-by-default enables CSRF graph exfiltration and persistent indirect prompt injection"
}
GHSA-2R2V-Q399-QQ93
Vulnerability from github – Published: 2021-11-10 19:45 – Updated: 2021-11-10 19:44Applications using Spring Cloud Gateway are vulnerable to specifically crafted requests that could make an extra request on downstream services. Users of affected versions should apply the following mitigation: 3.0.x users should upgrade to 3.0.5+, 2.2.x users should upgrade to 2.2.10.RELEASE or newer.
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.springframework.cloud:spring-cloud-gateway"
},
"ranges": [
{
"events": [
{
"introduced": "3.0.0"
},
{
"fixed": "3.0.5"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 2.2.10.RELEASE"
},
"package": {
"ecosystem": "Maven",
"name": "org.springframework.cloud:spring-cloud-gateway"
},
"ranges": [
{
"events": [
{
"introduced": "2.2.0"
},
{
"fixed": "2.2.10.RELEASE0.5"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2021-22051"
],
"database_specific": {
"cwe_ids": [
"CWE-352",
"CWE-863"
],
"github_reviewed": true,
"github_reviewed_at": "2021-11-09T21:08:14Z",
"nvd_published_at": "2021-11-08T14:15:00Z",
"severity": "MODERATE"
},
"details": "Applications using Spring Cloud Gateway are vulnerable to specifically crafted requests that could make an extra request on downstream services. Users of affected versions should apply the following mitigation: 3.0.x users should upgrade to 3.0.5+, 2.2.x users should upgrade to 2.2.10.RELEASE or newer.",
"id": "GHSA-2r2v-q399-qq93",
"modified": "2021-11-10T19:44:31Z",
"published": "2021-11-10T19:45:02Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-22051"
},
{
"type": "WEB",
"url": "https://tanzu.vmware.com/security/cve-2021-22051"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
}
],
"summary": "Request injection in Spring Cloud Gateway"
}
GHSA-2R3P-9JRG-PVG9
Vulnerability from github – Published: 2026-04-04 15:30 – Updated: 2026-04-04 15:30Redaxo CMS 5.2 contains a cross-site request forgery vulnerability that allows unauthenticated attackers to create administrative user accounts by tricking authenticated administrators into visiting malicious pages. Attackers can craft HTML forms targeting the users endpoint with hidden fields containing admin credentials and account parameters to add new administrator accounts without user consent.
{
"affected": [],
"aliases": [
"CVE-2016-20053"
],
"database_specific": {
"cwe_ids": [
"CWE-352"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-04-04T14:16:17Z",
"severity": "MODERATE"
},
"details": "Redaxo CMS 5.2 contains a cross-site request forgery vulnerability that allows unauthenticated attackers to create administrative user accounts by tricking authenticated administrators into visiting malicious pages. Attackers can craft HTML forms targeting the users endpoint with hidden fields containing admin credentials and account parameters to add new administrator accounts without user consent.",
"id": "GHSA-2r3p-9jrg-pvg9",
"modified": "2026-04-04T15:30:20Z",
"published": "2026-04-04T15:30:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2016-20053"
},
{
"type": "WEB",
"url": "https://www.exploit-db.com/exploits/40708"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/redaxo-cms-cross-site-request-forgery-via-users-endpoint"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-2R44-2G3R-72CR
Vulnerability from github – Published: 2022-05-17 03:37 – Updated: 2025-04-12 12:45Cross-site request forgery (CSRF) vulnerability in the Easy Social Icons plugin before 1.2.3 for WordPress allows remote attackers to hijack the authentication of administrators for requests that conduct cross-site scripting (XSS) attacks via the image_file parameter in an edit action in the cnss_social_icon_add page to wp-admin/admin.php.
{
"affected": [],
"aliases": [
"CVE-2015-2084"
],
"database_specific": {
"cwe_ids": [
"CWE-352"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2015-02-25T22:59:00Z",
"severity": "MODERATE"
},
"details": "Cross-site request forgery (CSRF) vulnerability in the Easy Social Icons plugin before 1.2.3 for WordPress allows remote attackers to hijack the authentication of administrators for requests that conduct cross-site scripting (XSS) attacks via the image_file parameter in an edit action in the cnss_social_icon_add page to wp-admin/admin.php.",
"id": "GHSA-2r44-2g3r-72cr",
"modified": "2025-04-12T12:45:44Z",
"published": "2022-05-17T03:37:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2015-2084"
},
{
"type": "WEB",
"url": "https://wordpress.org/plugins/easy-social-icons/changelog"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.com/files/130461/WordPress-Easy-Social-Icons-1.2.2-CSRF-XSS.html"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2015/Feb/76"
},
{
"type": "WEB",
"url": "http://www.exploit-db.com/exploits/36161"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/74893"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-2R5J-9HCP-6369
Vulnerability from github – Published: 2025-10-03 12:33 – Updated: 2025-10-03 12:33The TextBuilder plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions 1.0.0 to 1.1.1. This is due to missing or incorrect nonce validation on the 'handleToken' function. This makes it possible for unauthenticated attackers to update a user's authorization token via a forged request granted they can trick a site administrator into performing an action such as clicking on a link. Once the token is updated, an attacker can update the user's password and email address.
{
"affected": [],
"aliases": [
"CVE-2025-9213"
],
"database_specific": {
"cwe_ids": [
"CWE-352"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-10-03T12:15:47Z",
"severity": "HIGH"
},
"details": "The TextBuilder plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions 1.0.0 to 1.1.1. This is due to missing or incorrect nonce validation on the \u0027handleToken\u0027 function. This makes it possible for unauthenticated attackers to update a user\u0027s authorization token via a forged request granted they can trick a site administrator into performing an action such as clicking on a link. Once the token is updated, an attacker can update the user\u0027s password and email address.",
"id": "GHSA-2r5j-9hcp-6369",
"modified": "2025-10-03T12:33:16Z",
"published": "2025-10-03T12:33:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-9213"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/changeset/3371346"
},
{
"type": "WEB",
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/0153fb37-788e-42f2-9dfa-76418decf1f3?source=cve"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-2R5R-8G54-WCWH
Vulnerability from github – Published: 2022-05-17 02:52 – Updated: 2025-04-20 03:34Revive Adserver before 3.2.3 suffers from Cross-Site Request Forgery (CSRF). A number of scripts in Revive Adserver's user interface are vulnerable to CSRF attacks: www/admin/banner-acl.php, www/admin/banner-activate.php, www/admin/banner-advanced.php, www/admin/banner-modify.php, www/admin/banner-swf.php, www/admin/banner-zone.php, www/admin/tracker-modify.php.
{
"affected": [],
"aliases": [
"CVE-2016-9455"
],
"database_specific": {
"cwe_ids": [
"CWE-352"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-03-28T02:59:00Z",
"severity": "HIGH"
},
"details": "Revive Adserver before 3.2.3 suffers from Cross-Site Request Forgery (CSRF). A number of scripts in Revive Adserver\u0027s user interface are vulnerable to CSRF attacks: `www/admin/banner-acl.php`, `www/admin/banner-activate.php`, `www/admin/banner-advanced.php`, `www/admin/banner-modify.php`, `www/admin/banner-swf.php`, `www/admin/banner-zone.php`, `www/admin/tracker-modify.php`.",
"id": "GHSA-2r5r-8g54-wcwh",
"modified": "2025-04-20T03:34:57Z",
"published": "2022-05-17T02:52:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2016-9455"
},
{
"type": "WEB",
"url": "https://github.com/revive-adserver/revive-adserver/commit/65a9c8119b4bc7493fd957e1a8d6f6f731298b45"
},
{
"type": "WEB",
"url": "https://hackerone.com/reports/97123"
},
{
"type": "WEB",
"url": "https://www.revive-adserver.com/security/revive-sa-2016-001"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/83964"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-2R7W-6P29-5VF5
Vulnerability from github – Published: 2023-07-06 21:15 – Updated: 2024-04-04 05:45Cross-Site Request Forgery (CSRF) vulnerability in Tim Eckel Minify HTML plugin <= 2.1.7 vulnerability.
{
"affected": [],
"aliases": [
"CVE-2023-26014"
],
"database_specific": {
"cwe_ids": [
"CWE-352"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-05-23T15:15:09Z",
"severity": "HIGH"
},
"details": "Cross-Site Request Forgery (CSRF) vulnerability in Tim Eckel Minify HTML plugin \u003c=\u00a02.1.7 vulnerability.",
"id": "GHSA-2r7w-6p29-5vf5",
"modified": "2024-04-04T05:45:51Z",
"published": "2023-07-06T21:15:04Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-26014"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/vulnerability/minify-html-markup/wordpress-minify-html-plugin-2-02-cross-site-request-forgery-csrf-vulnerability?_s_id=cve"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-2R85-WFHW-9QQF
Vulnerability from github – Published: 2022-05-24 16:57 – Updated: 2024-04-04 02:09The buddypress-activity-plus plugin before 1.6.2 for WordPress has CSRF with resultant directory traversal via the wp-admin/admin-ajax.php bpfb_photos[] parameter in a bpfb_remove_temp_images action.
{
"affected": [],
"aliases": [
"CVE-2015-9455"
],
"database_specific": {
"cwe_ids": [
"CWE-352"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-10-07T15:15:00Z",
"severity": "HIGH"
},
"details": "The buddypress-activity-plus plugin before 1.6.2 for WordPress has CSRF with resultant directory traversal via the wp-admin/admin-ajax.php bpfb_photos[] parameter in a bpfb_remove_temp_images action.",
"id": "GHSA-2r85-wfhw-9qqf",
"modified": "2024-04-04T02:09:19Z",
"published": "2022-05-24T16:57:58Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2015-9455"
},
{
"type": "WEB",
"url": "https://security.dxw.com/advisories/csrf-and-arbitrary-file-deletion-in-buddypress-activity-plus-1-5"
},
{
"type": "WEB",
"url": "https://wordpress.org/plugins/buddypress-activity-plus/#developers"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H",
"type": "CVSS_V3"
}
]
}
Mitigation MIT-4
Strategy: Libraries or Frameworks
- Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid [REF-1482].
- For example, use anti-CSRF packages such as the OWASP CSRFGuard. [REF-330]
- Another example is the ESAPI Session Management control, which includes a component for CSRF. [REF-45]
Mitigation
Ensure that the application is free of cross-site scripting issues (CWE-79), because most CSRF defenses can be bypassed using attacker-controlled script.
Mitigation
Generate a unique nonce for each form, place the nonce into the form, and verify the nonce upon receipt of the form. Be sure that the nonce is not predictable (CWE-330). [REF-332]
Mitigation
Identify especially dangerous operations. When the user performs a dangerous operation, send a separate confirmation request to ensure that the user intended to perform that operation.
Mitigation
- Use the "double-submitted cookie" method as described by Felten and Zeller:
- When a user visits a site, the site should generate a pseudorandom value and set it as a cookie on the user's machine. The site should require every form submission to include this value as a form value and also as a cookie value. When a POST request is sent to the site, the request should only be considered valid if the form value and the cookie value are the same.
- Because of the same-origin policy, an attacker cannot read or modify the value stored in the cookie. To successfully submit a form on behalf of the user, the attacker would have to correctly guess the pseudorandom value. If the pseudorandom value is cryptographically strong, this will be prohibitively difficult.
- This technique requires Javascript, so it may not work for browsers that have Javascript disabled. [REF-331]
Mitigation
Do not use the GET method for any request that triggers a state change.
Mitigation
Check the HTTP Referer header to see if the request originated from an expected page. This could break legitimate functionality, because users or proxies may have disabled sending the Referer for privacy reasons.
CAPEC-111: JSON Hijacking (aka JavaScript Hijacking)
An attacker targets a system that uses JavaScript Object Notation (JSON) as a transport mechanism between the client and the server (common in Web 2.0 systems using AJAX) to steal possibly confidential information transmitted from the server back to the client inside the JSON object by taking advantage of the loophole in the browser's Same Origin Policy that does not prohibit JavaScript from one website to be included and executed in the context of another website.
CAPEC-462: Cross-Domain Search Timing
An attacker initiates cross domain HTTP / GET requests and times the server responses. The timing of these responses may leak important information on what is happening on the server. Browser's same origin policy prevents the attacker from directly reading the server responses (in the absence of any other weaknesses), but does not prevent the attacker from timing the responses to requests that the attacker issued cross domain.
CAPEC-467: Cross Site Identification
An attacker harvests identifying information about a victim via an active session that the victim's browser has with a social networking site. A victim may have the social networking site open in one tab or perhaps is simply using the "remember me" feature to keep their session with the social networking site active. An attacker induces a payload to execute in the victim's browser that transparently to the victim initiates a request to the social networking site (e.g., via available social network site APIs) to retrieve identifying information about a victim. While some of this information may be public, the attacker is able to harvest this information in context and may use it for further attacks on the user (e.g., spear phishing).
CAPEC-62: Cross Site Request Forgery
An attacker crafts malicious web links and distributes them (via web pages, email, etc.), typically in a targeted manner, hoping to induce users to click on the link and execute the malicious action against some third-party application. If successful, the action embedded in the malicious link will be processed and accepted by the targeted application with the users' privilege level. This type of attack leverages the persistence and implicit trust placed in user session cookies by many web applications today. In such an architecture, once the user authenticates to an application and a session cookie is created on the user's system, all following transactions for that session are authenticated using that cookie including potential actions initiated by an attacker and simply "riding" the existing session cookie.