# CVE-2026-121554: cordova-plugin-advanced-http 1.5.0 through 3.3.1 Cookie Leak via Cross-Origin Redirects

Status: published. Published: 2026-11-03. Updated: 2026-11-09.

cordova-plugin-advanced-http 1.5.0 through 3.3.1 contains an information disclosure vulnerability that leaks cookies to third-party hosts because the JavaScript layer passes jar-built Cookie headers as ordinary request headers. When a request is redirected to another host via an open or attacker-influenced redirect, native iOS and Android stacks forward the Cookie header, letting attackers hijack user sessions.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/silkimen/cordova-plugin-advanced-http/pull/549
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/silkimen/cordova-plugin-advanced-http/commit/777a6f10939fd76ddf7f9fe029ae3fcaed850ca1

## Affected products and versions

- silkimen / cordova-plugin-advanced-http (cordova-plugin-advanced-http): ≥ 1.5.0; ≤ 3.3.1 (affected, semver). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 8.2 (high); CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 5.9 (medium); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N; source: CNA: VulnCheck

- CVSS 4.0: 8.2 (high); CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/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; source: NVD: disclosure@vulncheck.com

- CVSS 3.1: 5.9 (medium); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N; source: NVD: disclosure@vulncheck.com

- CISA KEV: No listing in collected sources

- EPSS: 0.48% as of 2026-11-09; percentile 41.73%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-201

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/silkimen/cordova-plugin-advanced-http/pull/549 (CNA: VulnCheck; issue-tracking, patch)

- https://github.com/silkimen/cordova-plugin-advanced-http/commit/777a6f10939fd76ddf7f9fe029ae3fcaed850ca1 (CNA: VulnCheck; patch)

- https://github.com/silkimen/cordova-plugin-advanced-http (CNA: VulnCheck; product)

- https://github.com/silkimen/cordova-plugin-advanced-http/blob/f6c3ea7f66fbe57770f53546e4af16a74bc2e0cf/www/helpers.js#L376 (CNA: VulnCheck; technical-description)

- https://github.com/silkimen/cordova-plugin-advanced-http/blob/f6c3ea7f66fbe57770f53546e4af16a74bc2e0cf/src/ios/CordovaHttpPlugin.m#L88-L98 (CNA: VulnCheck; technical-description)

- https://www.vulncheck.com/advisories/cordova-plugin-advanced-http-through-3.3.1-cookie-leak-via-cross-origin-redirects (CNA: VulnCheck; third-party-advisory)

- https://github.com/silkimen/cordova-plugin-advanced-http (disclosure@vulncheck.com)

- https://github.com/silkimen/cordova-plugin-advanced-http/blob/f6c3ea7f66fbe57770f53546e4af16a74bc2e0cf/src/ios/CordovaHttpPlugin.m#L88-L98 (disclosure@vulncheck.com)

- https://github.com/silkimen/cordova-plugin-advanced-http/blob/f6c3ea7f66fbe57770f53546e4af16a74bc2e0cf/www/helpers.js#L376 (disclosure@vulncheck.com)

- https://github.com/silkimen/cordova-plugin-advanced-http/commit/777a6f10939fd76ddf7f9fe029ae3fcaed850ca1 (disclosure@vulncheck.com)

- https://github.com/silkimen/cordova-plugin-advanced-http/pull/549 (disclosure@vulncheck.com)

- https://www.vulncheck.com/advisories/cordova-plugin-advanced-http-through-3.3.1-cookie-leak-via-cross-origin-redirects (disclosure@vulncheck.com)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-121554; retrieved 2026-11-09; source updated 2026-11-09

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-121554; retrieved 2026-11-03; source updated 2026-11-03

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-121554; retrieved 2026-11-09; source updated Not reported

Revision: d85d64d3419f404d77c68ad32f0d64cec9eb59dafed576acdf5f094678410f0b

Canonical: https://y2.dev/cve/CVE-2026-121554

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.