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CVE-2013-4751

Symfony collectionCascaded and collectionCascadedDeeply fields security bypass

8.1 HighFix available

php-symfony2-Validator has loss of information during serialization

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
None

Exploit likelihood

1.44%Up 0.4 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 8.1

php-symfony2-Validator has loss of information during serialization

Record
CVE-2013-4751
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CVSS 2.0
4.9 MediumAV:N/AC:M/Au:S/C:P/I:P/A:N
Weakness
CWE-20
Updated
2026-11-02
CVE List No score

php-symfony2-Validator has loss of information during serialization

Record
CVE-2013-4751
Updated
2026-11-02
EUVDEUVD-2022-4922 No score

php-symfony2-Validator has loss of information during serialization

Record
EUVD-2022-4922
Updated
2026-11-03
GitHub AdvisoriesGHSA-q8j7-fjh7-25v5 8.1

Symfony collectionCascaded and collectionCascadedDeeply fields security bypass

When using the Validator component, if Symfony\\Component\\Validator\\Mapping\\Cache\\ApcCache is enabled (or any other cache implementing Symfony\\Component\\Validator\\Mapping\\Cache\\CacheInterface), some information is lost during serialization (the collectionCascaded and the collectionCascadedDeeply fields).

As a consequence, arrays or traversable objects stored in fields using the @Valid constraint are not traversed by the validator as soon as the validator configuration is loaded from the cache.

Record
GHSA-q8j7-fjh7-25v5
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-20
Updated
2026-11-02
OSVGHSA-q8j7-fjh7-25v5 8.1

Symfony collectionCascaded and collectionCascadedDeeply fields security bypass

When using the Validator component, if Symfony\\Component\\Validator\\Mapping\\Cache\\ApcCache is enabled (or any other cache implementing Symfony\\Component\\Validator\\Mapping\\Cache\\CacheInterface), some information is lost during serialization (the collectionCascaded and the collectionCascadedDeeply fields).

As a consequence, arrays or traversable objects stored in fields using the @Valid constraint are not traversed by the validator as soon as the validator configuration is loaded from the cache.

Record
GHSA-q8j7-fjh7-25v5
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-20
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
symfony/validator
Packagist
 2.0.0 up to 2.0.24
2.0.24
symfony/validator
Packagist
 2.1.0 up to 2.1.12
2.1.12
symfony/validator
Packagist
 2.2.0 up to 2.2.5
2.2.5
symfony/validator
Packagist
 2.3.0 up to 2.3.3
2.3.3
symfony/symfony
Packagist
 2.0.0 up to 2.0.24
2.0.24
symfony/symfony
Packagist
 2.1.0 up to 2.1.12
2.1.12
symfony/symfony
Packagist
 2.2.0 up to 2.2.5
2.2.5
symfony/symfony
Packagist
 2.3.0 up to 2.3.3
2.3.3
symfony/validator
Packagist
 2.0.0 up to 2.0.24, plus listed versions
2.0.42.0.52.0.62.0.7v2.0.10
Show 13 moreShow less
v2.0.12v2.0.13v2.0.14v2.0.15v2.0.16v2.0.17v2.0.18v2.0.19v2.0.20v2.0.21v2.0.22v2.0.23v2.0.9
2.0.24
symfony/validator
Packagist
 2.1.0 up to 2.1.12, plus listed versions
v2.1.0v2.1.1v2.1.10v2.1.11v2.1.2
Show 7 moreShow less
v2.1.3v2.1.4v2.1.5v2.1.6v2.1.7v2.1.8v2.1.9
2.1.12
Show 6 moreShow less
Affected packages
PackageAffectedFixed
symfony/validator
Packagist
 2.2.0 up to 2.2.5, plus listed versions
v2.2.0v2.2.1v2.2.2v2.2.3v2.2.4
2.2.5
symfony/validator
Packagist
 2.3.0 up to 2.3.3, plus listed versions
v2.3.0v2.3.1v2.3.2
2.3.3
symfony/symfony
Packagist
 2.0.0 up to 2.0.24, plus listed versions
2.0.42.0.52.0.62.0.7v2.0.10
Show 14 moreShow less
v2.0.11v2.0.12v2.0.13v2.0.14v2.0.15v2.0.16v2.0.17v2.0.18v2.0.19v2.0.20v2.0.21v2.0.22v2.0.23v2.0.9
2.0.24
symfony/symfony
Packagist
 2.1.0 up to 2.1.12, plus listed versions
v2.1.0v2.1.1v2.1.10v2.1.11v2.1.2
Show 7 moreShow less
v2.1.3v2.1.4v2.1.5v2.1.6v2.1.7v2.1.8v2.1.9
2.1.12
symfony/symfony
Packagist
 2.2.0 up to 2.2.5, plus listed versions
v2.2.0v2.2.1v2.2.2v2.2.3v2.2.4
2.2.5
symfony/symfony
Packagist
 2.3.0 up to 2.3.3, plus listed versions
v2.3.0v2.3.1v2.3.2
2.3.3

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2013-4751 is a high vulnerability (CVSS 8.1) in Sensiolabs Symfony, published November 1, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.44%, the 73rd percentile. Fixed in symfony/validator 2.0.24.

References

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