CVE-2025-26562
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedCross-Site Request Forgery (CSRF) vulnerability in Shambhu Patnaik RSS Filter rss-filter allows Stored XSS.This issue affects RSS Filter: from n/a through <= 1.2.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceA CSRF vulnerability in the RSS Filter plugin allows attackers to forge requests that can inject and store malicious scripts. Since the application lacks proper anti-CSRF mechanisms, an authenticated administrator visiting a malicious site can be tricked into unknowingly submitting requests that store XSS payloads in the RSS Filter data.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify if RSS Filter plugin is installedLocate the RSS Filter plugin in your application. Check plugin directories, modules, or features list for any component named 'RSS Filter' or similar.Affected if The RSS Filter plugin or module is present in the application
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Check for anti-CSRF token implementation on RSS Filter operationsInspect the RSS Filter plugin source code for form submissions and state-changing requests. Look for presence of anti-CSRF tokens (e.g., tokens in forms, token validation in request handlers). Search for 'csrf', 'token', 'nonce', or similar validation patterns.Affected if No anti-CSRF tokens are found in RSS Filter form submissions or state-changing operations
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Verify input validation on RSS Filter data fieldsExamine how the RSS Filter plugin handles input data. Check if user-supplied content (feed URLs, titles, descriptions, filter criteria) is validated, sanitized, or encoded before storage.Affected if Input fields accept raw user content without validation or encoding
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Inspect stored RSS Filter data for XSS payloadsAccess the database or storage where RSS Filter configuration and feed data are stored. Examine records for any suspicious script tags, event handlers, or encoded payloads that may have been injected.Affected if Stored data contains unsanitized script tags or HTML in RSS Filter records
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Check session cookie SameSite attribute configurationReview session cookie configuration for the application. Verify if SameSite attribute is set to 'Strict' or 'Lax' on session cookies used by the RSS Filter plugin.Affected if Session cookies lack SameSite attribute or are set to 'None' without secure flag
A user is affected if the RSS Filter plugin is installed and lacks anti-CSRF protection on its state-changing operations, allowing stored XSS to be injected via forged requests.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataImplement anti-CSRF tokens on state-changing operations and apply proper input validation and output encoding to prevent stored XSS. Additionally, configure SameSite attributes on session cookies.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2025-26562 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-26562 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data