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CVE-2026-70588: tryghost ghost Cross-site Scripting

CVSS: 5.0v3.1MediumDeferred
AliasesGHSA-2gx6-7gx2-wwcfBIT-ghost-2026-70588
Published 04-08-2026Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2026-70588 is a medium (CVSS 5.0) Cross-site Scripting vulnerability in tryghost ghost. EPSS estimates a 0.43% chance of exploitation in the next 30 days, higher than 35.8% of scored vulnerabilities.

Overall risk
20/100
0100
Low · default modelHow is this calculated?
CVSS score
5.0/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.43%
0%100%
Low · +0.17 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 04-08-2026
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

Ghost is a Node.js content management system. From 5.26.0 until 6.54.1, the Universal Import feature in Ghost Admin failed to properly sanitize imported content resulting in XSS in post content. This issue is fixed in version 6.54.1.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.43%

Chance of exploitation in the next 30 days

Percentile

36%

Versus all other CVEs

30-day change

+0.17 pp

From 0.26% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.43%

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

Npm1 product
  • ghost≥ 5.26.0, < 6.54.1
Tryghost1 product
  • ghost≥ 5.26.0, < 6.54.1

2 vendors · 2 products

References

5 links