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🛡️ CVE-2026-5987

🟡 CVSS 4.7 — Medium ✅ No Known Exploit CWE-791 NVD
4.7
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs administrative privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity low, availability low.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: High — administrative rights are needed first.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: Low — limited, and the attacker does not choose what is affected.
  • Integrity impact: Low — limited, and the attacker does not choose what is affected.
  • Availability impact: Low — limited, and the attacker does not choose what is affected.

Weakness class

CVE-2026-5987 is classified as CWE-791: Incomplete Filtering of Special Elements. The product receives data from an upstream component, but does not completely filter special elements before sending it to a downstream component.

Affected software

CVE-2026-5987 is recorded against 1 package.

  • unknown

Timeline and source

Published on 9 April 2026 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com
github.com
vuldb.com
vuldb.com
vuldb.com

Other advisories for this package

unknown has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-791: Incomplete Filtering of Special Elements) in other software:

Details

Severity MEDIUM
CVSS Score 4.7
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
CWE CWE-791
Public Exploit ✅ No
Source NVD
Published 2026-04-09
Updated 2026-08-20
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown — —

Similar Threats

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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