> ## Content Index > Fetch the complete content index at: https://f4n6.co.uk/llms.txt > Use this file to discover other available public pages before exploring further. # Laravel framework patched for multiple remote DoS and integrity bypass flaws - URL: https://f4n6.co.uk/security-feed/laravel-framework-patched-for-multiple-remote-dos-and-integrity-bypass-flaws/ - Published: 2026-10-20T21:19:27.000Z - Updated: 2026-10-20T21:19:27.000Z - Author: Jeff Davies - Tags: #security-feed ## 1\. Executive summary The Laravel framework released security fixes on 19 October 2026 for multiple vulnerabilities affecting versions 12.68.x before 12.68.0 and 13.29.x before 13.29.0, as reported by CERT-FR on 20 October 2026\. The flaws allow remote denial of service, data integrity compromise and security policy bypass. No CVSS score, CVE identifier, EPSS estimate or CISA KEV entry is available for any of these issues, and no exploitation in the wild has been reported. EMEA financial services firms running Laravel-based customer portals, internal tooling or API backends on the affected branches should treat the integrity and policy-bypass flaws as the priority: a bypass of framework-level authorization or validation controls can expose application logic that sits behind them. The DoS flaws are lower impact but relevant to internet-facing endpoints. ## 2\. Regulatory framing No specific DORA/NIS2 article is directly engaged by this item. ## 3\. Technical analysis & attack chain CERT-FR classifies the impact across the set as remote denial of service, data integrity compromise and security policy bypass. The advisory does not map individual flaws to individual impacts, and the two GitHub Security Advisories it cites (GHSA-5wcm-3v2w-8362 and GHSA-f9x3-7vq9-cph6, both dated 19 October 2026) were not retrieved for this note. The specific vulnerable components, the request shapes that trigger each flaw, and the preconditions (authentication required, specific middleware, specific configuration) are not stated in the source material. What is confirmed: 1. Affected versions are Laravel 12.68.x below 12.68.0 and 13.29.x below 13.29.0. 2. Fixes are available in 12.68.0 and 13.29.0 respectively. 3. The impact set spans remote DoS, integrity compromise and security policy bypass. The attack chain beyond that cannot be reconstructed from the source. CERT-FR does not describe initial access, exploited component, payload, persistence, privilege escalation, command-and-control, lateral movement or data access for any of the flaws. Any advisory that fills those fields for this item is inventing them. Two observations a defender can act on without the missing detail. First, "security policy bypass" in a PHP framework typically means a control implemented in the framework (middleware, signed URL validation, CSRF, mass-assignment guarding, authorization gates) can be circumvented by a crafted request; the practical exposure is whatever application logic sits behind that control, so the blast radius is application-specific and cannot be assessed from the framework advisory alone. Second, "remote denial of service" means an unauthenticated or low-privilege request can exhaust a resource; the exposure is limited to endpoints that reach the affected code path. Neither observation substitutes for the vendor advisories, which should be read before scoping. The related CERT-FR advisories in the corpus (PHP, GitLab, Nginx, cURL/libcurl, OpenSSL) are separate items from the same publisher and do not describe these Laravel flaws. They are not evidence of a campaign and should not be read as one. No named threat actor is associated with this item, and no MITRE ATT&CK profile applies. Any attribution would be speculation. ## 4\. Mitigation & containment P1 (within 24 hours) - Inventory every Laravel deployment and record the framework version from `composer.lock` (the `laravel/framework` entry) rather than from `composer.json`, which may carry a range constraint. Flag any install on 12.68.x below 12.68.0 or 13.29.x below 13.29.0. - Upgrade to 12.68.0 or 13.29.0\. Run `composer update laravel/framework` with the constraint pinned to the fixed version, then redeploy. Do not rely on `composer update` alone if the constraint allows the vulnerable range. - Read GHSA-5wcm-3v2w-8362 and GHSA-f9x3-7vq9-cph6 in full before closing the ticket. They carry the per-flaw component, precondition and impact mapping that CERT-FR omits, and they determine whether any of your routes are exposed. P2 (within 72 hours) - For internet-facing Laravel applications that cannot be patched inside 24 hours, place a WAF or reverse-proxy rule in front of the endpoints identified in the two advisories as reaching the affected code. This is a stopgap, not a fix. - Review application logs for anomalous request patterns against those endpoints in the period since 19 October 2026: unusually large or malformed payloads, repeated requests from a single source against a single route, and requests that reach handlers normally gated by middleware. The source gives no signature, so this is a hunt for the class of behaviour, not a match on a known indicator. - Confirm that any authorization or validation control the framework provides is also enforced at the application layer where the business logic depends on it. A framework bypass is only as damaging as the logic behind the bypassed control. P3 (within 7 days) - Add a CI gate that fails the build when `laravel/framework` resolves below 12.68.0 on the 12.x branch or below 13.29.0 on the 13.x branch. - Extend the same check to any vendored or forked copy of the framework, which `composer` will not see. ## 5\. Indicators of compromise No indicators of compromise available in the source material. The source describes impact categories (remote DoS, integrity compromise, policy bypass) but gives no atomic indicators: no hashes, no request strings, no file paths, no log signatures. Behavioural indicators cannot be specified either, because the source does not state which component or request shape triggers each flaw. Detection must wait on the two GitHub advisories. ## 6\. Detection Insufficient indicators to author detection rules. The source contains no distinctive strings, command-line flags, file names, registry keys or hard-coded values belonging to the flaws themselves. A rule built on "Laravel" or the GHSA identifiers would detect reporting about the vulnerability, not exploitation of it, and is not emitted. ## 7\. Sources - ANSSI France CERT-FR, "Multiples vulnérabilités dans Laravel" (CERTFR-2026-AVI-1343), 20 October 2026\. https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-1343/ - Laravel, security advisory GHSA-5wcm-3v2w-8362, 19 October 2026\. https://github.com/laravel/framework/security/advisories/GHSA-5wcm-3v2w-8362 (cited by CERT-FR; not retrieved for this note) - Laravel, security advisory GHSA-f9x3-7vq9-cph6, 19 October 2026\. https://github.com/laravel/framework/security/advisories/GHSA-f9x3-7vq9-cph6 (cited by CERT-FR; not retrieved for this note) ## 8\. Adverse Trace position Adverse Trace assesses this as a moderate-priority patch item for EMEA financial services clients running Laravel, with the integrity and policy-bypass flaws carrying more weight than the DoS flaws because a bypassed framework control can expose application logic that the control was meant to protect. No CVSS score, CVE identifier, EPSS estimate or CISA KEV entry is available, and no exploitation in the wild has been reported; the severity assessment therefore rests on CERT-FR's impact categories and on the affected version ranges, not on a scored vulnerability. The two GitHub advisories are the authoritative technical detail and were not retrieved for this note, so the per-flaw component and precondition mapping is missing here and should be read from the vendor before scoping. Adverse Trace will retrieve both advisories, publish a follow-up with the per-flaw detail and any CVE assignments, and notify clients whose asset inventory shows Laravel on the affected branches. --- [Read the original source →](https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-1343/?ref=f4n6.co.uk) *Published via PulseTrace — Adverse Trace threat intelligence.*