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TI-2026-83104 Aliases CVE-2026-45145

PHP object injection in Chamilo LMS career data handling

Priority LOW 35CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-502.

Summary

Chamilo LMS before 2.0.1 passes career data read from the database to PHP's unserialize() without restricting which classes it may create, which is CWE-502 (Deserialization of Untrusted Data). An attacker with low privileges who can write crafted serialized objects to that data can run arbitrary OS commands as the web server user, using gadget chains in autoloaded Symfony, Doctrine, or Monolog components. The attack is high complexity and needs no user interaction.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

Description from the CNA

Chamilo LMS is an open-source learning management system. Prior to 2.0.1, `public/main/inc/lib/career.lib.php` and `public/main/cron/import_csv.php` call PHP's native `unserialize()` on `user_career.extra_data` retrieved from the database without the `allowed_classes: false` safety option. An attacker able to write crafted serialized PHP objects to that column, for example through a separate SQL injection, a compromised admin CSV import, or a lower-privilege admin panel, can instantiate arbitrary PHP objects and trigger POP gadget chains in autoloaded `Symfony`, `Doctrine`, or `Monolog` components. This permits arbitrary OS commands as the web server user, compromising server confidentiality, integrity, and availability. This issue is fixed in version 2.0.1.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00353 29th percentileScored 2026-11-07
Fix Fixed chamilo-lms (chamilo): 2.0.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
chamilochamilo-lmsbefore 2.0.12.0.1Patch availableCNA
  • chamilo-lms Vendorchamilo Affected before 2.0.1 Fixed in 2.0.1 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:chamilo:chamilo_lms:*:*:*:*:*:*:*:*——chamilo
  • cpe:2.3:a:chamilo:chamilo_lms:*:*:*:*:*:*:*:* Versions — — ·chamilo

Remediation

Upgrade Chamilo LMS to version 2.0.1, which fixes this issue.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

  • Fix · CNA chamilo-lms (chamilo) Fixed in 2.0.1

Timeline

  1. 2026-10-30 Threatist record created from CVE-2026-45145
  2. 2026-10-30 CISA SSVC decision points changed
  3. 2026-10-30 Priority changed: MEDIUM → LOW

References

Other 3

  • TI-2023-17452 A command injection vulnerability in the wsConvertPpt component of Chamilo v1.11.* up to… CVSS 3.1CRITICAL 9.8
  • TI-2023-03150 Chamilo LMS Unauthenticated Command Injection CVSS 3.1CRITICAL 9.8
  • TI-2025-32070 Chamilo: Evaluation of untrusted user input leads to Remote Code Execution CVSS 3.1CRITICAL 9.8
  • TI-2025-32081 Deserialization of untrusted data in chamilo-lms CVSS 4.0HIGH 8.8
  • TI-2024-32140 Chamilo: Post-Auth Remote Code Execution CVSS 4.0HIGH 8.7
  • TI-2023-03907 Chamilo LMS Unauthenticated Big Upload File Remote Code Execution CVSS 3.1HIGH 8.1
See all 162 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences