CVE-2021-37704

Phpfastcache vulnerability

CVSS

5.4

EPSS

6.1%

EPSS pct

93th

Exploited

No known

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 vendor

Phpfastcache

Affected product

Phpfastcache

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L

Weakness type (CWE)

CWE-200 — Exposure of Sensitive Information
CWE-668 — Exposure of Resource to Wrong Sphere

Published

2021-08-12

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring low privileges, no user interaction. Successful exploitation leads to low impact to confidentiality, low impact to availability.

Its EPSS score of 6.1% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 93% of all scored CVEs.

Check your external exposure to CVE-2021-37704

Confirm whether Phpfastcache Phpfastcache is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2021-37704.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-37704

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-37704 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

Run a free external exposure scan

Are you exposed to CVE-2021-37704?

Run an instant, non-intrusive external scan to check your attack surface for CVE-2021-37704.

Start free scan

No credit card. Agentless.

Related vulnerabilities