CVE-2026-63490

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.47% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 38.9% of scored records. A rank, not a probability.

NVD base score

7.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Received. NVD last modified this record on 2026-08-25.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-08-20 14:45Z15 DAYS AGO

Last updated

2026-08-25 14:41Z10 DAYS AGO

Reserved

2026-07-16

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

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

Weaknesses

• CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')Base
• CWE-23Relative Path TraversalBase
• CWE-552Files or Directories Accessible to External PartiesBase

Data version

5.2

Document digest

deea868c0a887ced01c0deacf16d449684f743dabe1a538126ab64f82592756d

• github.comhttps://github.com/jknack/handlebars.java/security/advisories/GHSA-g29j-rwfv-h99wx_refsource_CONFIRM
• github.comhttps://github.com/jknack/handlebars.java/commit/61f43423a337b87db5fec1fe59f0725aaaa38df5x_refsource_MISC
• github.comhttps://github.com/jknack/handlebars.java/releases/tag/v4.5.3x_refsource_MISC