Medium severity · published Apr 15, 2026
CVE-2026-26291
Stored cross-site scripting vulnerability exists in GROWI v7.4.6 and earlier
5.4
CVSS
0.2%
EPSS
No
On KEV
Description
Stored cross-site scripting vulnerability exists in GROWI v7.4.6 and earlier. If this vulnerability is exploited, an arbitrary script may be executed in a user's web browser.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 8% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GR
GROWI · GROWI, Inc.
v7.4.6 and earlier · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-26291
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-26291
growi.co.jp
https://growi.co.jp/news/43/
jvn.jp
https://jvn.jp/en/jp/JVN62079296/
More from GROWI
8.3
CVE-2026-25083
GROWI OpenAI thread/message API endpoints do not perform authorization
7.5
CVE-2026-80191
GROWI before 8.0.2 Missing Authorization on Attachment Retrieval for Unauthenticated Requests
7.5
CVE-2026-41040
GROWI provided by GROWI, Inc
7.2
CVE-2026-41951
Path traversal vulnerability exists in GROWI v7.5.0 and earlier, which may allow an attacker to execute arbitrary EJS templates on the server when an email server is running in…
6.3
CVE-2026-53620
GROWI contains a vulnerability with an authorization bypass through user-controlled key in the bookmark folder APIs