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Vulnerabilities

Vulnerability · CVE-2026-27787

Cross-site scripting vulnerability exists in MATCHA SNS 1.3.9 and earlier.

Published Apr 8, 2026 · catalog updated Jul 25, 2026 · matcha sns

Check if you run it

No confirmed exploitation is on record for CVE-2026-27787. EPSS is 0.24%. Act only if a listed version of matcha sns is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.24%
Remediation
Version ranges on file
Affected products
cpe icz/matcha sns · stated matcha sns

Cross-site scripting vulnerability exists in MATCHA SNS 1.3.9 and earlier. If this vulnerability is exploited, an arbitrary script may be executed on the web browser of the user who accessed the website using the product.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe icz/matcha snsversion unspecified
  • stated matcha sns<= 1.3.9

How to fix CVE-2026-27787

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-27787. EPSS is 0.24%. Act only if a listed version of matcha sns is installed.

Which versions are affected?

Compare what you have installed with matcha sns <= 1.3.9. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-79: Cross-site Scripting (XSS). EPSS 0.24%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 8, 2026 · NIST NVD

    Detected

    Cross-site scripting vulnerability exists in MATCHA SNS 1.3.9 and earlier. If this vulnerability is exploited, an arbitrary script may be executed on the web browser of the user who accessed the website using the product.

  2. Jul 25, 2026 · NIST NVD

    Updated

    Cross-site scripting vulnerability exists in MATCHA SNS 1.3.9 and earlier. If this vulnerability is exploited, an arbitrary script may be executed on the web browser of the user who accessed the website using the product.

Sources

  • CVE.orgVulnerability recordCVE-2026-27787

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-27787

    30-day exploitation probability 0.2%

    first.org
  • NIST NVDVulnerability recordCVE-2026-27787

    Cross-site scripting vulnerability exists in MATCHA SNS 1.3.9 and earlier. If this vulnerability is exploited, an arbitrary script may be executed on the web browser of the user who accessed the website using the product.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.