6.9

CVE-2026-66666: automattic wordpress

CVSS: 6.9v4.0MediumDeferred
AliasesUBUNTU-CVE-2026-66666DEBIAN-CVE-2026-66666
Published 06-10-2026Last modified 06-10-2026
Open JSON

Vulnerability summary

CVE-2026-66666 is a medium (CVSS 6.9) vulnerability in automattic wordpress. EPSS estimates a 0.29% chance of exploitation in the next 30 days, higher than 20.4% of scored vulnerabilities. Fixed in 4.7.38.

Overall risk
28/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.9/10
010
Medium · v4.0 (CVE.org)
EPSS score
0.29%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 06-10-2026
    PublishedVulnerability first disclosed.
  2. 06-10-2026
    Last modifiedVulnerability information updated.

Description

Insertion of Sensitive Information Into Sent Data vulnerability in Automattic WordPress allows Retrieve Embedded Sensitive Data. This issue affects WordPress: from 7.1 through 7.1.2, from 7.0 through 7.0.6, from 6.9 through 6.9.9, from 6.8 through 6.8.10, from 6.7 through 6.7.9, and from 6.6 through 6.6.9.

CVSS metrics

5 scores · 5 sources · 2 versions

EPSS trend

Probability

0.29%

Chance of exploitation in the next 30 days

Percentile

20%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

07-10-202620-10-2026
EPSS score
0.29%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Automattic1 product
  • wordpress≥ 7.1, ≤ 7.1.2 | ≥ 7.0, ≤ 7.0.6 | ≥ 6.9, ≤ 6.9.9 | ≥ 6.8, ≤ 6.8.10 | ≥ 6.7, ≤ 6.7.9 | ≥ 6.6, ≤ 6.6.9
Debian1 product
  • wordpressAll versions (No fix recorded) | < 7.1.3+dfsg1-1
Ubuntu1 product
  • wordpressAll versions (No fix recorded)
Wordpress1 product
  • wordpress≥ 4.7.0, ≤ 4.7.37 (fixed in 4.7.38) | ≥ 4.8.0, ≤ 4.8.32 (fixed in 4.7.38) | ≥ 4.9.0, ≤ 4.9.33 (fixed in 4.7.38) | ≥ 5.0.0, ≤ 5.0.29 (fixed in 4.7.38) | ≥ 5.1.0, ≤ 5.1.26 (fixed in 4.7.38) | ≥ 5.2.0, ≤ 5.2.28 (fixed in 4.7.38) | ≥ 5.3.0, ≤ 5.3.25 (fixed in 4.7.38) | ≥ 5.4.0, ≤ 5.4.23 (fixed in 4.7.38) | ≥ 5.5.0, ≤ 5.5.22 (fixed in 4.7.38) | ≥ 5.6.0, ≤ 5.6.21 (fixed in 4.7.38) | ≥ 5.7.0, ≤ 5.7.19 (fixed in 4.7.38) | ≥ 5.8.0, ≤ 5.8.17 (fixed in 4.7.38) | ≥ 5.9.0, ≤ 5.9.18 (fixed in 4.7.38) | ≥ 6.0.0, ≤ 6.0.16 (fixed in 4.7.38) | ≥ 6.1.0, ≤ 6.1.14 (fixed in 4.7.38) | ≥ 6.2.0, ≤ 6.2.13 (fixed in 4.7.38) | ≥ 6.3.0, ≤ 6.3.12 (fixed in 4.7.38) | ≥ 6.4.0, ≤ 6.4.12 (fixed in 4.7.38) | ≥ 6.5.0, ≤ 6.5.12 (fixed in 4.7.38) | ≥ 6.6.0, ≤ 6.6.9 (fixed in 4.7.38) | ≥ 6.7.0, ≤ 6.7.9 (fixed in 4.7.38) | ≥ 6.8.0, ≤ 6.8.10 (fixed in 4.7.38) | ≥ 6.9.0, ≤ 6.9.9 (fixed in 4.7.38) | ≥ 7.0.0, ≤ 7.0.6 (fixed in 4.7.38) | ≥ 7.1.0, ≤ 7.1.2 (fixed in 4.7.38)

4 vendors · 4 products

References

7 links