CWE-918
AllowedServer-Side Request Forgery (SSRF)
Abstraction: Base · Status: Incomplete
The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.
4738 vulnerabilities reference this CWE, most recent first.
GHSA-87WW-2P7V-MC8X
Vulnerability from github – Published: 2022-07-21 00:00 – Updated: 2022-08-02 00:00Digiwin BPM has inadequate filtering for URL parameter. An unauthenticated remote attacker can perform Blind SSRF attack to discover internal network topology base on URL error response.
{
"affected": [],
"aliases": [
"CVE-2022-32457"
],
"database_specific": {
"cwe_ids": [
"CWE-918"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-07-20T02:15:00Z",
"severity": "MODERATE"
},
"details": "Digiwin BPM has inadequate filtering for URL parameter. An unauthenticated remote attacker can perform Blind SSRF attack to discover internal network topology base on URL error response.",
"id": "GHSA-87ww-2p7v-mc8x",
"modified": "2022-08-02T00:00:24Z",
"published": "2022-07-21T00:00:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-32457"
},
{
"type": "WEB",
"url": "https://www.chtsecurity.com/news/09757883-fea6-4aff-9e22-8ae8c4f8f7bb"
},
{
"type": "WEB",
"url": "https://www.twcert.org.tw/tw/cp-132-6287-20ef0-1.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-8882-FRVV-92W4
Vulnerability from github – Published: 2026-07-02 18:59 – Updated: 2026-07-02 18:59Finding
Location: core/src/shared/secure-fetch.ts:42-45
When new URL() throws a parse error, the assertSecureUrl function returned without throwing, silently allowing the request to proceed without HTTPS validation.
Status
Fixed in v0.2.136 — The catch block now throws an error instead of silently returning.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "@asymmetric-effort/specifyjs"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.2.136"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-50288"
],
"database_specific": {
"cwe_ids": [
"CWE-918"
],
"github_reviewed": true,
"github_reviewed_at": "2026-07-02T18:59:33Z",
"nvd_published_at": null,
"severity": "HIGH"
},
"details": "## Finding\n\n**Location**: `core/src/shared/secure-fetch.ts:42-45`\n\nWhen `new URL()` throws a parse error, the `assertSecureUrl` function returned without throwing, silently allowing the request to proceed without HTTPS validation.\n\n## Status\n\n**Fixed in v0.2.136** \u2014 The catch block now throws an error instead of silently returning.",
"id": "GHSA-8882-frvv-92w4",
"modified": "2026-07-02T18:59:33Z",
"published": "2026-07-02T18:59:33Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/asymmetric-effort/specifyjs/security/advisories/GHSA-8882-frvv-92w4"
},
{
"type": "WEB",
"url": "https://github.com/asymmetric-effort/specifyjs/commit/25d1fb491d99479efdf501f5f75e0bb80c908f0a"
},
{
"type": "PACKAGE",
"url": "https://github.com/asymmetric-effort/specifyjs"
},
{
"type": "WEB",
"url": "https://github.com/asymmetric-effort/specifyjs/releases/tag/v0.2.136"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "@asymmetric-effort/specifyjs: URL parse failure silently allows request"
}
GHSA-889G-GR2G-424W
Vulnerability from github – Published: 2022-05-24 17:46 – Updated: 2022-07-28 00:00The WidgetConnector plugin in Confluence Server and Confluence Data Center before version 5.8.6 allowed remote attackers to manipulate the content of internal network resources via a blind Server-Side Request Forgery (SSRF) vulnerability.
{
"affected": [],
"aliases": [
"CVE-2021-26072"
],
"database_specific": {
"cwe_ids": [
"CWE-918"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-04-01T19:15:00Z",
"severity": "MODERATE"
},
"details": "The WidgetConnector plugin in Confluence Server and Confluence Data Center before version 5.8.6 allowed remote attackers to manipulate the content of internal network resources via a blind Server-Side Request Forgery (SSRF) vulnerability.",
"id": "GHSA-889g-gr2g-424w",
"modified": "2022-07-28T00:00:49Z",
"published": "2022-05-24T17:46:04Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-26072"
},
{
"type": "WEB",
"url": "https://jira.atlassian.com/browse/CONFSERVER-61399"
}
],
"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"
}
]
}
GHSA-88C3-G468-4JGG
Vulnerability from github – Published: 2026-05-20 03:31 – Updated: 2026-05-20 03:31The Nexa Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE plugin for WordPress is vulnerable to Server-Side Request Forgery (SSRF) in versions up to and including 1.1.1. This is due to the import_demo() function accepting a user-supplied URL in the demo_json_file POST parameter and passing it directly to wp_remote_get() without any URL validation or restriction against internal or private network destinations. The nexa_blocks_nonce required for the AJAX action is publicly exposed in the HTML source of any frontend page where the plugin is active via wp_localize_script on the enqueue_block_assets hook, effectively making the nonce available to all visitors and bypassing any intended authentication barrier. This makes it possible for unauthenticated attackers to make server-side HTTP requests to arbitrary internal or external destinations, potentially exposing internal services, cloud metadata endpoints such as the AWS instance metadata service, localhost services, and other resources not intended to be publicly accessible. A secondary SSRF vector also exists whereby image URLs extracted from the attacker-controlled JSON response are subsequently fetched via a second wp_remote_get() call, allowing chained exploitation through a crafted JSON payload.
{
"affected": [],
"aliases": [
"CVE-2026-6394"
],
"database_specific": {
"cwe_ids": [
"CWE-918"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-20T02:16:37Z",
"severity": "MODERATE"
},
"details": "The Nexa Blocks \u2013 Gutenberg Blocks, Page Builder for Gutenberg Editor \u0026 FSE plugin for WordPress is vulnerable to Server-Side Request Forgery (SSRF) in versions up to and including 1.1.1. This is due to the import_demo() function accepting a user-supplied URL in the demo_json_file POST parameter and passing it directly to wp_remote_get() without any URL validation or restriction against internal or private network destinations. The nexa_blocks_nonce required for the AJAX action is publicly exposed in the HTML source of any frontend page where the plugin is active via wp_localize_script on the enqueue_block_assets hook, effectively making the nonce available to all visitors and bypassing any intended authentication barrier. This makes it possible for unauthenticated attackers to make server-side HTTP requests to arbitrary internal or external destinations, potentially exposing internal services, cloud metadata endpoints such as the AWS instance metadata service, localhost services, and other resources not intended to be publicly accessible. A secondary SSRF vector also exists whereby image URLs extracted from the attacker-controlled JSON response are subsequently fetched via a second wp_remote_get() call, allowing chained exploitation through a crafted JSON payload.",
"id": "GHSA-88c3-g468-4jgg",
"modified": "2026-05-20T03:31:34Z",
"published": "2026-05-20T03:31:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-6394"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/browser/nexa-blocks/tags/1.1.1/inc/classes/enqueue-assets.php#L84"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/browser/nexa-blocks/tags/1.1.1/inc/template/template.php#L236"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/browser/nexa-blocks/tags/1.1.1/inc/template/template.php#L242"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/browser/nexa-blocks/trunk/inc/classes/enqueue-assets.php#L84"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/browser/nexa-blocks/trunk/inc/template/template.php#L236"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/browser/nexa-blocks/trunk/inc/template/template.php#L242"
},
{
"type": "WEB",
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/b4bb3067-7953-466d-a469-8a101450f133?source=cve"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-88CW-HHX8-8CRW
Vulnerability from github – Published: 2026-04-03 00:31 – Updated: 2026-04-03 00:31Server-side request forgery (ssrf) in Azure Custom Locations Resource Provider (RP) allows an authorized attacker to elevate privileges over a network.
{
"affected": [],
"aliases": [
"CVE-2026-26135"
],
"database_specific": {
"cwe_ids": [
"CWE-918"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-04-03T00:16:04Z",
"severity": "CRITICAL"
},
"details": "Server-side request forgery (ssrf) in Azure Custom Locations Resource Provider (RP) allows an authorized attacker to elevate privileges over a network.",
"id": "GHSA-88cw-hhx8-8crw",
"modified": "2026-04-03T00:31:09Z",
"published": "2026-04-03T00:31:09Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-26135"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26135"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-88F6-FJJ2-Q75J
Vulnerability from github – Published: 2026-07-23 12:32 – Updated: 2026-07-23 12:32Author Server Side Request Forgery (SSRF) in Photo Block <= 1.7.1 versions.
{
"affected": [],
"aliases": [
"CVE-2026-24639"
],
"database_specific": {
"cwe_ids": [
"CWE-918"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-23T12:17:12Z",
"severity": "MODERATE"
},
"details": "Author Server Side Request Forgery (SSRF) in Photo Block \u003c= 1.7.1 versions.",
"id": "GHSA-88f6-fjj2-q75j",
"modified": "2026-07-23T12:32:24Z",
"published": "2026-07-23T12:32:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-24639"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/wordpress/plugin/photo-block/vulnerability/wordpress-photo-block-plugin-1-7-1-server-side-request-forgery-ssrf-vulnerability?_s_id=cve"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-88GH-2526-GFRR
Vulnerability from github – Published: 2026-05-14 20:29 – Updated: 2026-06-09 10:19Summary
Although SSRF is validated against hostnames that resolve to private IPv6 addresses, when providing the IPV6 in URL as http://[::1], the SSRF defenses do not work.
Details
https://github.com/Hmbown/DeepSeek-TUI/blob/15f62e3e93d842f30b428877819ebc1c8cb96814/crates/tui/src/tools/fetch_url.rs#L321
PoC
Prompt: Run fetch_url tool and give output, no thinking. Use url : http://[::1]
Impact
Access to local restricted resources
{
"affected": [
{
"package": {
"ecosystem": "crates.io",
"name": "deepseek-tui"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.8.26"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-45373"
],
"database_specific": {
"cwe_ids": [
"CWE-918"
],
"github_reviewed": true,
"github_reviewed_at": "2026-05-14T20:29:48Z",
"nvd_published_at": "2026-05-28T18:16:35Z",
"severity": "HIGH"
},
"details": "### Summary\nAlthough SSRF is validated against hostnames that resolve to private IPv6 addresses, when providing the IPV6 in\u200c\u200c URL\u200c as `http://[::1]`, the SSRF defenses do not work.\n\n### Details\nhttps://github.com/Hmbown/DeepSeek-TUI/blob/15f62e3e93d842f30b428877819ebc1c8cb96814/crates/tui/src/tools/fetch_url.rs#L321\n\n### PoC\nPrompt:\u200c `Run fetch_url tool and give output, no thinking. Use url : http://[::1]`\n\n### Impact\nAccess to local restricted resources",
"id": "GHSA-88gh-2526-gfrr",
"modified": "2026-06-09T10:19:56Z",
"published": "2026-05-14T20:29:48Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/Hmbown/CodeWhale/security/advisories/GHSA-88gh-2526-gfrr"
},
{
"type": "WEB",
"url": "https://github.com/Hmbown/DeepSeek-TUI/security/advisories/GHSA-88gh-2526-gfrr"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45373"
},
{
"type": "PACKAGE",
"url": "https://github.com/Hmbown/DeepSeek-TUI"
},
{
"type": "WEB",
"url": "https://github.com/Hmbown/DeepSeek-TUI/blob/15f62e3e93d842f30b428877819ebc1c8cb96814/crates/tui/src/tools/fetch_url.rs#L321"
},
{
"type": "WEB",
"url": "https://github.com/Hmbown/DeepSeek-TUI/releases/tag/v0.8.26"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "DeepSeek TUI has SSRF\u200c IPV6 bypass"
}
GHSA-88GM-J2WX-58H6
Vulnerability from github – Published: 2026-04-23 21:52 – Updated: 2026-04-27 16:42Summary
The fetch() call for remote images in packages/integrations/cloudflare/src/utils/image-binding-transform.ts (line 28) uses the default redirect: 'follow' behavior. This allows the Cloudflare Worker to follow HTTP redirects to arbitrary URLs, bypassing the isRemoteAllowed() domain allowlist check which only validates the initial URL.
All three other image fetch paths in the codebase correctly use { redirect: 'manual' }. This is an incomplete fix for GHSA-qpr4-c339-7vq8.
Confirmed on HEAD.
Root Cause
image-binding-transform.ts line 28:
const content = await (isRemotePath(href) ? fetch(imageSrc) : assets.fetch(imageSrc));
Missing { redirect: 'manual' }. The three protected paths:
// image-passthrough-endpoint.ts:23
response = await fetch(href, { redirect: 'manual' });
// assets/endpoint/shared.ts:11
const res = await fetch(src, { redirect: 'manual' });
// assets/utils/remoteProbe.ts:53
const response = await fetch(url, { redirect: 'manual' });
PoC
Demonstrated with Node.js that fetch() without redirect: 'manual' follows 302 redirects to arbitrary destinations:
# Server A (allowed domain) returns 302 → Server B (internal)
fetch('http://allowed:19741/img.jpg') → follows 302 → hits http://internal:19742/secret
fetch('http://allowed:19741/img.jpg', {redirect:'manual'}) → returns 302, internal server NOT hit
Attack path: attacker finds an open redirect on an allowed domain, crafts /_image?href=https://allowed-cdn.com/redirect?url=http://internal-service/, and the Worker follows the redirect to the unauthorized destination.
Impact
Bypasses the image.domains and image.remotePatterns allowlist for the default Cloudflare image service (cloudflare-binding). Enables blind SSRF to domains not in the allowlist. Same vulnerability class as GHSA-qpr4-c339-7vq8 (HIGH) which fixed the passthrough endpoint but missed this one.
Suggested Fix
const content = await (isRemotePath(href) ? fetch(imageSrc, { redirect: 'manual' }) : assets.fetch(imageSrc));
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "@astrojs/cloudflare"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "13.1.10"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-41321"
],
"database_specific": {
"cwe_ids": [
"CWE-918"
],
"github_reviewed": true,
"github_reviewed_at": "2026-04-23T21:52:03Z",
"nvd_published_at": "2026-04-24T18:16:28Z",
"severity": "LOW"
},
"details": "## Summary\n\nThe `fetch()` call for remote images in `packages/integrations/cloudflare/src/utils/image-binding-transform.ts` (line 28) uses the default `redirect: \u0027follow\u0027` behavior. This allows the Cloudflare Worker to follow HTTP redirects to arbitrary URLs, bypassing the `isRemoteAllowed()` domain allowlist check which only validates the initial URL.\n\nAll three other image fetch paths in the codebase correctly use `{ redirect: \u0027manual\u0027 }`. This is an incomplete fix for GHSA-qpr4-c339-7vq8.\n\nConfirmed on HEAD.\n\n## Root Cause\n\n`image-binding-transform.ts` line 28:\n\n const content = await (isRemotePath(href) ? fetch(imageSrc) : assets.fetch(imageSrc));\n\nMissing `{ redirect: \u0027manual\u0027 }`. The three protected paths:\n\n // image-passthrough-endpoint.ts:23\n response = await fetch(href, { redirect: \u0027manual\u0027 });\n\n // assets/endpoint/shared.ts:11\n const res = await fetch(src, { redirect: \u0027manual\u0027 });\n\n // assets/utils/remoteProbe.ts:53\n const response = await fetch(url, { redirect: \u0027manual\u0027 });\n\n## PoC\n\nDemonstrated with Node.js that `fetch()` without `redirect: \u0027manual\u0027` follows 302 redirects to arbitrary destinations:\n\n # Server A (allowed domain) returns 302 \u2192 Server B (internal)\n fetch(\u0027http://allowed:19741/img.jpg\u0027) \u2192 follows 302 \u2192 hits http://internal:19742/secret\n fetch(\u0027http://allowed:19741/img.jpg\u0027, {redirect:\u0027manual\u0027}) \u2192 returns 302, internal server NOT hit\n\nAttack path: attacker finds an open redirect on an allowed domain, crafts `/_image?href=https://allowed-cdn.com/redirect?url=http://internal-service/`, and the Worker follows the redirect to the unauthorized destination.\n\n## Impact\n\nBypasses the `image.domains` and `image.remotePatterns` allowlist for the default Cloudflare image service (`cloudflare-binding`). Enables blind SSRF to domains not in the allowlist. Same vulnerability class as GHSA-qpr4-c339-7vq8 (HIGH) which fixed the passthrough endpoint but missed this one.\n\n## Suggested Fix\n\n const content = await (isRemotePath(href) ? fetch(imageSrc, { redirect: \u0027manual\u0027 }) : assets.fetch(imageSrc));",
"id": "GHSA-88gm-j2wx-58h6",
"modified": "2026-04-27T16:42:19Z",
"published": "2026-04-23T21:52:03Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/withastro/astro/security/advisories/GHSA-88gm-j2wx-58h6"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41321"
},
{
"type": "WEB",
"url": "https://github.com/withastro/astro/commit/a43eb4b40b4f81530e3c9b5e2959495900320433"
},
{
"type": "ADVISORY",
"url": "https://github.com/advisories/GHSA-qpr4-c339-7vq8"
},
{
"type": "PACKAGE",
"url": "https://github.com/withastro/astro"
},
{
"type": "WEB",
"url": "https://github.com/withastro/astro/releases/tag/%40astrojs%2Fcloudflare%4013.1.10"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
}
],
"summary": "Cloudflare has SSRF via redirect following through its image-binding-transform endpoint (incomplete fix for GHSA-qpr4)"
}
GHSA-88GP-Q3V3-9QMM
Vulnerability from github – Published: 2025-04-16 15:34 – Updated: 2025-04-16 15:34A vulnerability was found in mirweiye Seven Bears Library CMS 2023. It has been classified as problematic. Affected is an unknown function of the component Add Link Handler. The manipulation leads to server-side request forgery. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.
{
"affected": [],
"aliases": [
"CVE-2025-3691"
],
"database_specific": {
"cwe_ids": [
"CWE-918"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-04-16T13:15:53Z",
"severity": "MODERATE"
},
"details": "A vulnerability was found in mirweiye Seven Bears Library CMS 2023. It has been classified as problematic. Affected is an unknown function of the component Add Link Handler. The manipulation leads to server-side request forgery. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.",
"id": "GHSA-88gp-q3v3-9qmm",
"modified": "2025-04-16T15:34:38Z",
"published": "2025-04-16T15:34:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-3691"
},
{
"type": "WEB",
"url": "https://github.com/KKDT12138/CVE/blob/main/cve2.pdf"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.304980"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.304980"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.553507"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/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-88QF-P934-H9QG
Vulnerability from github – Published: 2026-03-19 21:30 – Updated: 2026-03-19 21:30Server-side request forgery (ssrf) in Microsoft 365 Copilot's Business Chat allows an authorized attacker to elevate privileges over a network.
{
"affected": [],
"aliases": [
"CVE-2026-26137"
],
"database_specific": {
"cwe_ids": [
"CWE-918"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-19T21:17:08Z",
"severity": "HIGH"
},
"details": "Server-side request forgery (ssrf) in Microsoft 365 Copilot\u0027s Business Chat allows an authorized attacker to elevate privileges over a network.",
"id": "GHSA-88qf-p934-h9qg",
"modified": "2026-03-19T21:30:24Z",
"published": "2026-03-19T21:30:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-26137"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26137"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L",
"type": "CVSS_V3"
}
]
}
No mitigation information available for this CWE.
CAPEC-664: Server Side Request Forgery
An adversary exploits improper input validation by submitting maliciously crafted input to a target application running on a server, with the goal of forcing the server to make a request either to itself, to web services running in the server’s internal network, or to external third parties. If successful, the adversary’s request will be made with the server’s privilege level, bypassing its authentication controls. This ultimately allows the adversary to access sensitive data, execute commands on the server’s network, and make external requests with the stolen identity of the server. Server Side Request Forgery attacks differ from Cross Site Request Forgery attacks in that they target the server itself, whereas CSRF attacks exploit an insecure user authentication mechanism to perform unauthorized actions on the user's behalf.