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CVE-2021-37704

Exposed phpinfo() in PhpFastCache

MEDIUM
4.3
CVSS Score
Published: August 12, 2021 at 08:05 PM UTC
Updated: June 17, 2026 at 04:01 AM UTC
2 products affected across 2 vendorsPhpfastcachePhpfastcache

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Severity
MEDIUM4.3
Exploit prediction
EPSS 6%

Description

PhpFastCache is a high-performance backend cache system (packagist package phpfastcache/phpfastcache). In versions before 6.1.5, 7.1.2, and 8.0.7 the `phpinfo()` can be exposed if the `/vendor` is not protected from public access. This is a rare situation today since the vendor directory is often located outside the web directory or protected via server rule (.htaccess, etc). Only the v6, v7 and v8 will be patched respectively in 8.0.7, 7.1.2, 6.1.5. Older versions such as v5, v4 are not longer supported and will **NOT** be patched. As a workaround, protect the `/vendor` directory from public access.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Phpfastcache· Phpfastcache
95%
v < 6.1.57.0.0 ≤ v < 7.1.28.0.0 ≤ v < 8.0.7
Affected range stops below 6.1.5, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.1.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.0.7, so it looks safe — our inference, not a vendor statement
Phpfastcache· Phpsocialnetworkcomposer
60%
v < 6.1.5v < 7.1.2v < 8.0.7
Affected range stops below 6.1.5, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.1.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.0.7, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (8)

x_refsource_MISCRelease NotesThird Party Advisory
Source: [email protected]
https://github.com/PHPSocialNetwork/phpfastcache/blob/master/CHANGELOG.md#807
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/PHPSocialNetwork/phpfastcache/commit/41a77d0d8f126dbd6fbedcd9e6a82e86cdaafa51
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/PHPSocialNetwork/phpfastcache/pull/813
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://github.com/PHPSocialNetwork/phpfastcache/pull/814
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://github.com/PHPSocialNetwork/phpfastcache/pull/815
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://github.com/PHPSocialNetwork/phpfastcache/security/advisories/GHSA-cvh5-p6r6-g2qc
x_refsource_MISCExploitIssue TrackingThird Party Advisory
Source: [email protected]
https://github.com/flextype/flextype/issues/567
x_refsource_MISCProductThird Party Advisory
Source: [email protected]
https://packagist.org/packages/phpfastcache/phpfastcache

CVSS

4.3MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-200CWE-668

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