THREATPORT/VULNERABILITY/CVE-2021-23368
MEDIUM SEVERITY

CVE-2021-23368

Postcss vulnerability

CVSS
5.3
EPSS
3.5%
EPSS pct
88th
Exploited
No known
The package postcss from 7.0.0 and before 8.2.10 are vulnerable to Regular Expression Denial of Service (ReDoS) during source map parsing.
Affected vendor
Postcss
Affected product
Postcss
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Published
2021-04-12

Risk analysis

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

Its EPSS score of 3.5% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 88% of all scored CVEs.

Check your external exposure to CVE-2021-23368

  • Confirm whether Postcss Postcss is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2021-23368.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-23368

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-23368 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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Are you exposed to CVE-2021-23368?

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