CVE-2026-26337: Hyland Alfresco Transformation Service (Enterprise) · Absolute Path Traversal
Affects Hyland Alfresco Transformation Service (Enterprise)Source CVE Database V5
Not known to be exploited · CVSS 8.8 High : upgrade to 4.3.0 soon.
Data as of 25 Oct 2026, 19:02 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 34% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 4.3.0, 5.3.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 19 Feb 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.
What to do
Upgrade Alfresco to 4.3.0 (Transformation Service (Enterprise)) or 5.3.0 (Community (Transform Core)).
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| HylandAlfresco Transformation Service (Enterprise) | Affected
| Fixed in
|
| HylandAlfresco Community (Transform Core) | Affected
| Fixed in
|
GitHubAlfresco Community (Transform Core)pkg:github/Alfresco Community (Transform Core)Other threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
If you cannot patch yet, restrict access to the Alfresco Transformation Service to trusted networks and monitor for suspicious activity related to file access or SSRF attempts.
Description
Hyland Alfresco Transformation Service allows unauthenticated attackers to achieve both arbitrary file read and server-side request forgery through the absolute path traversal.
References
- connect.hyland.com/t5/alfresco-blog/security-update-cve-2026-26337-cve-2026-26338-cve-2026-26339/ba-p/496551 (opens in a new tab)
- hyland.com/en/solutions/products/alfresco-platform (opens in a new tab)
- vulncheck.com/advisories/hyland-alfresco-transformation-service-absolute-path-traversal-arbitrary-file-read-and-ssrf (opens in a new tab)