PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-116100 gougucms CVE debrief

A vulnerability was found in gougucms up to 4.08.18, specifically in the User Level Handler of the file app/admin/controller/Level.php. The manipulation of the argument Title leads to cross-site scripting. The attack can be carried out remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond.

Vendor
gougucms
Product
gougucms
CVSS
MEDIUM 4.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-26
Original CVE updated
2026-10-29
Advisory published
2026-10-26
Advisory updated
2026-10-29

Who should care

Defenders responsible for gougucms installations, especially those using versions up to 4.08.18, should assess their exposure and prioritize verification and potential remediation.

Why it matters

CVE-2026-116100 is a medium-severity vulnerability in gougucms that allows for remote cross-site scripting. Defenders should verify their inventory, assess exposure, and prioritize remediation.

  • Defenders need to verify the presence of this vulnerability in their inventory.
  • Cross-site scripting attacks may be possible if the vulnerability is not patched.
  • Defenders should monitor for potential exploitation attempts.
  • Remediation priority is medium due to the CVSS score of 4.8.

Technical summary

The vulnerability exists in the User Level Handler of the file app/admin/controller/Level.php in gougucms up to version 4.08.18. The manipulation of the argument Title leads to cross-site scripting, which can be exploited remotely. Defenders should verify their inventory, assess exposure, and prioritize remediation. The CVE record and source item provide details about the vulnerability, including its existence in gougucms up to version 4.08.18 and the potential for remote cross-site scripting attacks. However, the vendor's response and detailed impact are not provided.

Defensive priority

Defenders should prioritize verifying the presence of this vulnerability in their inventory, especially if using gougucms versions up to 4.08.18, and assess the feasibility of cross-site scripting attacks.

Recommended defensive actions

  • Verify the presence of gougucms versions up to 4.08.18 in your inventory.
  • Assess the feasibility of cross-site scripting attacks on your systems.
  • Monitor for potential exploitation attempts.
  • Consider applying patches or mitigations if available.
  • Review compensating controls for exposed systems while remediation is scheduled and verified.
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review.
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

The CVE record and source item provide details about the vulnerability, including its existence in gougucms up to version 4.08.18 and the potential for remote cross-site scripting attacks. However, the vendor's response and detailed impact are not provided.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-116100 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-116100

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-116100 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-116100

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • gougucms User Level Level.php add cross site scripting

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/116xxx/CVE-2026-116100.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://vuldb.com/vuln/426168

    Supplemental source - vdb-entry, technical-description

  • Source reference

    Unverified legacy reference

    URL: https://vuldb.com/vuln/426168/cti

    Supplemental source - signature, permissions-required

  • Source reference

    Unverified legacy reference

    URL: https://vuldb.com/cve/CVE-2026-116100

    Supplemental source - third-party-advisory

  • Source reference

    Unverified legacy reference

    URL: https://vuldb.com/submit/1002525

    Supplemental source - third-party-advisory

  • Source reference

    Unverified legacy reference

    URL: https://github.com/yuhuixiaowu/cve/blob/main/gougucms_v4.08.18_XSS.md

    Supplemental source - exploit

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.