A security flaw has been discovered in SourceCodester Dynamic Input Field Generator Using HTML, CSS, and PHP 1.0. This affects an unknown function. The manipulation results in cross-site request forgery. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks.
CVE-2026-77391
MEDIUMPre-NVD 4.34.3Trending — 3 sources updated this week
EchelonGraph scoreLOW confidence
This medium-severity CVE scores 4.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: secondary
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: —CVSS: 4.3Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 4.3
- EG Score
- 4.3(low)
- EG Risk
- 24(Track)EG Risk 24/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity43% × 45%Exploitation0% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- —
- EPSS %ILE
- —
- KEV
- Not listed
Published
August 21, 2026
Last Modified
August 21, 2026
Advisory Details (2)
Auto-updated Aug 21, 2026🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available
CSRF vulnerability in Dynamic Input Field Generator (Sourcecodester) · GitHub
https://gist.github.com/rionyxraiza/428d4481fe471704829ca06de7be9d8cWeakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 4× in last 7d / 4× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-08-21 02:17 UTCEG score recompute
- 2026-08-21 02:16 UTCNVD updateCVSS v4 → 2.1
- 2026-08-21 01:56 UTCEG score recompute
- 2026-08-21 01:55 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Frequently asked(4)
What is CVE-2026-77391?
CVE-2026-77391 is a medium vulnerability published on August 21, 2026. A security flaw has been discovered in SourceCodester Dynamic Input Field Generator Using HTML, CSS, and PHP 1.0. This affects an unknown function. The manipulation results in cross-site request forgery. The attack can be launched remotely. The exploit has been released to the public and may be…
When was CVE-2026-77391 disclosed?
CVE-2026-77391 was first published in the National Vulnerability Database on August 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-77391?
CVE-2026-77391 has a CVSS v3 base score of 4.3 (NVD). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-77391?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-77391, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-77391
Is Your Infrastructure Affected by CVE-2026-77391?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.