CVE-2018-15133

mediumpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.766 · 100 %ileexploit · weaponizedEUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV · 14 exploits · weaponized

Likely / severe?

76.6% (100th) EPSS

CVSS 6.8 · medium

Is it mine?

5 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

added 2024-01-16remediate by 2024-02-06

required action Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

EPSS · scored 2026-10-27

Laravel Deserialization of Untrusted Data Vulnerability

In Laravel Framework through 5.5.40 and 5.6.x through 5.6.29, remote code execution might occur as a result of an unserialize call on a potentially untrusted X-XSRF-TOKEN value. This involves the decrypt method in Illuminate/Encryption/Encrypter.php and PendingBroadcast in gadgetchains/Laravel/RCE/3/chain.php in phpggc. The attacker must know the application key, which normally would never occur, but could happen if the attacker previously had privileged access or successfully accomplished a previous attack.

cvss

Technical severity, 0–10. One row per scoring source.

8.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.8–8.1

v2.06.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8.6 · impact 6.4

v3.18.1highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.2 · impact 5.9

v3.18.1highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.18.1highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 2.2 · impact 5.9

v3.18.1highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · OSV

v3.18.1highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-502USprimaryCWE-502US

exploits (14)

Public proof-of-concept and weaponised exploit code.

exploit/unix/http/laravel_token_unserialize_execPHP Laravel Framework token Unserialize Remote Command Executionweaponized · metasploit
EDB-47129PHP Laravel Framework 5.5.40 / 5.6.x < 5.6.30 - token Unserialize Remote Command Execution (Metasploit)functional · exploit_db
AlienX2001/better-poc-for-CVE-2018-15133An automated PoC for CVE 2018-15133PoC · poc_in_github
AzhariKun/CVE-2018-15133AzhariKun/CVE-2018-15133PoC · poc_in_github
Bilelxdz/Laravel-CVE-2018-15133Cette exploit en python va vous permettre de créer des listes de sites et les exploiter rapidement.PoC · poc_in_github
Loaxert/CVE-2018-15133-PoCLoaxert/CVE-2018-15133-PoCPoC · poc_in_github

affected products (5)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
laravel laravel≤ 5.5.40nvdUScpe:2.3:a:laravel:laravel:*:*:*:*:*:*:*:*
laravel laravel5.6.0 → 5.6.29nvdUScpe:2.3:a:laravel:laravel:*:*:*:*:*:*:*:*
Packagist laravel/framework≤ 5.5.40osvUSpkg:composer/laravel/framework
Packagist laravel/framework5.6.0 → 5.6.30osvUSpkg:composer/laravel/framework

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-qvqm-h22r-4cp9Laravel Framework RCE Vulnerability2022-05-14ghsa · osvUS
In Laravel Framework through 5.5.40 and 5.6.x through 5.6.29, remote code execution might occur as a result of an unserialize call on a potentially untrusted X-XSRF-TOKEN value. This involves the decrypt method in `Illuminate/Encryption/Encrypter.php` and PendingBroadcast in `gadgetchains/Laravel/RCE/3/chain.php` in phpggc. The attacker must know the application key, which normally would never occur, but could happen if the attacker previously had privileged access or successfully accomplished a previous attack.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2018-08-09modified 2026-06-17

related (3,745)

Related entries.

ID	severity	EPSS	exploitable	published
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In JetBrains TeamCity before 2026.1.3, 2025.11.7 unauthenticated remote code execution was possible via the agent polling protocol
CVE-2026-58644US	—OT critical	15.9% (97th)	KEV	2026-07-14
Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.
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Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.
CVE-2026-12569US	critical9.8OT critical	46.0% (99th)	KEV	2026-06-18
A critical remote code execution (RCE) vulnerability has been reported in PTC Windchill PDMlink and PTC FlexPLM. The vulnerability may be exploited through the deserialization of u…
CVE-2026-45247US	—OT critical	26.2% (98th)	KEV	2026-05-26
Mirasvit Full Page Cache Warmer for Magento 2 before version 1.11.12 contains a PHP object injection vulnerability that allows unauthenticated attackers to achieve remote code exec…

+3740 more

references (9)

External citations — patches, advisories, analysis.

scry

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