CVE-2026-73529 (GCVE-0-2026-73529)
Vulnerability from cvelistv5 – Published: 2026-08-18 19:10 – Updated: 2026-08-18 19:30 X_Open Source
VLAI
EPSS
VEX
Title
Plainpad Missing Rate Limiting via POST /v1/sessions
Summary
Plainpad through 1.1.1, fixed in commit d3823fc, contains a missing rate limiting vulnerability that allows unauthenticated attackers to send unbounded login requests to the POST /v1/sessions endpoint due to dead code in App\Http\Kernel.php that is never instantiated under the Laravel 11+ skeleton, leaving the API throttle configuration unattached to any route. Attackers can exploit this by sending unlimited credential attempts with no lockout or CAPTCHA enforcement, and additionally trigger CPU exhaustion by forcing repeated bcrypt comparisons on each request.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 19:30 UTC
CWE
- CWE-307 - Improper Restriction of Excessive Authentication Attempts
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/alextselegidis/plainpad/commit… | patch |
| https://www.vulncheck.com/advisories/plainpad-mis… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| alextselegidis | plainpad |
Affected:
0 , ≤ 1.1.1
(semver)
Unaffected: d3823fc595b5d8f842a6fd7dfe49b7852a10fdac (git) |
guessed |
Date Public
2026-08-18 00:00
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Sightings
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They have not been verified by an analyst and are provided for guidance only.
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.