CVE-2023-30802Public exploitNetwork attack vector

Unauthenticated PHP source disclosure via malformed Content-Length

Published Oct 10, 2023 · Updated Nov 28, 2025

Source-code disclosure in Sangfor Next-Generation Application Firewall 8.0.7 through 8.0.17 allows remote attackers to read PHP source. The web server treats a nonnumeric Content-Length value as oversized input yet appends index.php source to its HTTP 413 response. No authentication or user interaction is required; disclosure is limited to requested server-side PHP files reachable through the web service.

CVSS severity5.3
Medium
EPSS probability0.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Source-code disclosure in Sangfor Next-Generation Application Firewall 8.0.7 through 8.0.17 allows remote attackers to read PHP source. The web server treats a nonnumeric Content-Length value as oversized input yet appends index.php source to its HTTP 413 response. No authentication or user interaction is required; disclosure is limited to requested server-side PHP files reachable through the web service.

The record

CVE
CVE-2023-30802
Published
Oct 10, 2023
Updated
Nov 28, 2025
Vendor
Sangfor Technologies
Product
Next-Generation Application Firewall
Classifications
CWE-540, CWE-668, CAPEC-167, T1595.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 10, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 28, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=8.0.17

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Sangfor Technologies · Next-Generation Application Firewallversion=8.0.17

Published CVSS scores

5.3VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-540Inclusion of Sensitive Information in Source Code
CWE-668Exposure of Resource to Wrong Sphere
CAPEC-167White Box Reverse Engineering
T1595.002Vulnerability Scanning

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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