CVE-2026-8429
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 · uneditedSPIP versions prior to 4.4.14 contain a remote code execution vulnerability in the private space that allows attackers to execute arbitrary code in the context of the web server. Attackers can exploit this vulnerability to achieve code execution that bypasses the SPIP security screen protections.
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 · high confidenceSPIP versions before 4.4.14 contain a remote code execution vulnerability in the private space (authenticated area) that allows attackers to execute arbitrary code in the context of the web server. The vulnerability specifically bypasses SPIP's security screen protections, enabling unauthenticated or authenticated attackers to achieve code execution on the server.
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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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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Locate SPIP installation directorySearch for SPIP core files such as ecrire/inc_version.php or spip.php at the web root. Check common paths like /var/www/html/, /web/, or the document root of your web server.Affected if SPIP is found installed on the server
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Determine installed SPIP versionOpen the file ecrire/inc_version.php in the SPIP installation directory. Look for a line defining the version number, typically displayed as something like $spip_version_branche or $spip_version_code.Affected if The version number found is lower than 4.4.14
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Verify private space accessibilityAttempt to access the SPIP private space by navigating to the /ecrire/ or /spip.php?exec=accoute path on your server. Check if the private area is reachable from the network.Affected if The private space is publicly accessible and the SPIP version is below 4.4.14
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Review web server logs for suspicious activityExamine access logs in your web server logs directory (commonly /var/log/apache2/ or /var/log/nginx/) for requests to SPIP private space endpoints containing unusual parameters, encoded content, or patterns indicative of code injection attempts.Affected if Log entries show exploitation attempts targeting the private space area
The environment is affected if SPIP is installed and the installed version is lower than 4.4.14 with the private space accessible to attackers.
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.
dbcve · scopedUpgrade SPIP to version 4.4.14 or later. Additionally, restrict access to the private space to trusted users only and apply web application firewall rules as a defense-in-depth measure while the upgrade is being planned.
SPIP 4.4.14
- Back up your current SPIP installation and database before upgrading
- Download SPIP version 4.4.14 from the official SPIP website (https://www.spip.net/)
- Replace the existing SPIP files with the new version 4.4.14 files, preserving your local configuration and data files
- Run the SPIP upgrade process by accessing your site's private space
- Verify the installation by logging into the private space and checking that SPIP reports version 4.4.14
- Test critical functionality to ensure the upgrade did not break existing features
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation4.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,968.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-8429 — 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-2026-8429 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