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CVE-2026-86294

MEDIUM 5.3 PoC AVAILABLE ALL-YEARS

Published 2026-09-07 · Last modified 2026-09-11 · VulDB · NVD: Deferred

A vulnerability has been found in SourceCodester Simple Traffic Offense System 1.0. Affected by this issue is some unknown functionality of the file save-settings.php of the component Settings Update Endpoint. The manipulation of the argument site_name/site_desc leads to cross site scripting. Remote exploitation of the attack is possible. The exploit has been disclosed to the public and may be used.

EXPLOIT AVAILABLE

Public exploit or PoC code exists. The barrier to attack is reduced — watch closely.

Exploitation likelihood

0.5%chance of exploitation in 30 days · 39th percentile

○ In CISA KEV● Public exploit / PoC◆ SSVC: exploitation poc, automatable yes

Impact if exploited

5.3CVSS 4.0 · MEDIUM · CNA

  • ConfidentialityNone
  • IntegrityLow
  • AvailabilityNone

What an attacker needs

  • ✓Access: Reachable over the network — no local access needed
  • ✓Privileges: No account or privileges required
  • ⚠User interaction: Succeeds with passive user activity
  • ✓Complexity: No special conditions — reliably repeatable
  • ✓Requirements: No special attack requirements

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept & exploit code

Test against your own equipment

curl -s https://vulnpedia.com/cve/CVE-2026-86294/poc.jsonMachine-readable PoC index for this CVE (for automation).

For defensive triage, patch verification, and authorized testing on systems you own. Machine-readable: /cve/CVE-2026-86294/poc.json

Affected

Vendors Sourcecodester

Products Simple Traffic Offense System

Weakness (CWE)

  • CWE-79: Cross Site Scripting
  • CWE-94: Code Injection

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P

All CVSS metrics

  • MEDIUM 5.3 v4.0 · CNA Primary
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
  • MEDIUM 4.3 v3.1 · CNA Primary
    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
  • MEDIUM 4.3 v3.0 · CNA Primary
    CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
  • MEDIUM 5 v2.0 · CNA Primary
    AV:N/AC:L/Au:N/C:N/I:P/A:N/E:POC/RL:ND/RC:UR
  • LOW 2.1 v4.0 · NVD Secondary
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/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
  • MEDIUM 4.3 v3.1 · NVD Secondary
    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
  • MEDIUM 5 v2.0 · NVD Secondary
    AV:N/AC:L/Au:N/C:N/I:P/A:N

References

Exploits & PoC

Advisories

Technical & other

Sources: NVD · CVE.org · EPSS