> CVE-2026-5987 [MEDIUM]

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PUBLISHED
2026-04-09 23:17
MODIFIED
2026-04-09 23:17
CVSS_SCORE V3
5.1
EPSS (Prob. Exploit)
0.41%
Top 65.6%
DATA SOURCES:
NVD 🔗 2026-04-10 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-10-25 GITHUB 🔗 2026-10-28

> 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.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

> MÉTRIQUES CVSS DÉTAILLÉES

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
High (H)
Authentifié avec privilèges administratifs
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
Low (L)
Divulgation limitée d'informations
I (Impact Intégrité)
Integrity Impact
Low (L)
Modification limitée des données possible
A (Impact Disponibilité)
Availability Impact
Low (L)
Interruption partielle du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
Low
Divulgation limitée d'informations
Intégrité
Low
Modification limitée des données possible
Disponibilité
Low
Interruption partielle du service possible

> WEAKNESSES

CWE-791 CWE-1336

> CWE DETAILED DESCRIPTIONS

CWE-791: Incomplete Filtering of Special Elements - The product receives data from an upstream component, but it does not completely filter special elements before sending it to a downstream component. | CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine - The product uses a template engine to insert or process externally-influenced input, but it does not neutralize or incorrectly neutralizes special elements or syntax that can be interpreted as template expressions or other code directives when processed by the engine.

> GITHUB SECURITY ADVISORY

GHSA-v56q-mh7h-f735 HIGH

Immutable.js `List` 32-bit trie overflow → unrecoverable DoS

AFFECTED PACKAGES:
NPM / immutable
< 3.8.4
Fixed in: 3.8.4
NPM / immutable
>= 4.0.0-rc.1, < 4.3.9
Fixed in: 4.3.9
NPM / immutable
>= 5.0.0-beta.1, < 5.1.8
Fixed in: 5.1.8

> HISTORIQUE DES MODIFICATIONS

Première apparition
09/04/2026 23:17
Source: NVD
📊 ENRICHISSEMENT 01/11/2026 06:59
CWE
Champ modifié: Description CWE
Ancienne valeur:
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. |...
Nouvelle valeur:
CWE-791: Incomplete Filtering of Special Elements - The product receives data from an upstream component, but it does not completely filter special elements before sending it to a downstream component...
📊 ENRICHISSEMENT 01/05/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
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. |...
Total des modifications: 2 Dernière mise à jour: 1 week ago

> REFERENCES

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