Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 6.1.0-BETA1 until 6.4.40, 7.4.12, and 8.0.12, UrlSanitizer::parse() passes Unicode explicit-direction BiDi formatting characters through into sanitized href and src attributes, allowing sanitized content to display a link destination that visually differs from the actual destination and enabling phishing-style visual spoofing. This issue is fixed in versions 6.4.40, 7.4.12, and 8.0.12.
CVE-2026-45064
MEDIUMNVD 6.12.3
EchelonGraph scoreLOW confidence
This low-severity CVE scores 2.3 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit probability: 0.1%, top 78% of all CVEs by exploit prediction. 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: cna:github_m, epss
6.1
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.1Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.1
- EG Score
- 2.3(low)
- EG Risk
- —
- EPSS
- 21.5%
- KEV
- Not listed
Published
May 27, 2026
Last Modified
July 21, 2026
Advisory Details (1)
Auto-updated Jul 16, 2026Patch available. Sources: github.
github Patch Available
HtmlSanitizer URL Attributes Pass Through BiDi Override Characters → Visual href Spoofing · Advisory · symfony/symfony · GitHub
https://github.com/symfony/symfony/security/advisories/GHSA-h5vq-qfcg-4m6pVendor Advisories for CVE-2026-45064(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(2 across 1 ecosystem)
Packagist(2)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| symfony/html-sanitizer | v8.0.0, v8.0.7, v8.0.8 | 8.0.12 | — |
| symfony/symfony | v8.0.0 ... v8.0.9 (12 versions) | 8.0.12 | — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 6× in last 7d / 10× 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.
- 2026-07-22 14:08 UTCEPSS rescore
- 2026-07-20 17:08 UTCEPSS rescore
- 2026-07-19 14:31 UTCEPSS rescore
- 2026-07-19 02:29 UTCEPSS rescore
- 2026-07-18 10:04 UTCEPSS rescore
- 2026-07-16 17:03 UTCEPSS rescore
- 2026-07-15 16:57 UTCEPSS rescore
- 2026-07-15 16:23 UTCNVD updateCVSS v3 → 6.1 · severity → MEDIUM
- 2026-07-14 19:04 UTCEG score recompute▲ 2.30
- 2026-07-14 19:00 UTCMITRE cvelistV5CVSS v3 → 2.3 · CVSS v4 → 2.3 · severity → LOW
- 2026-06-14 23:18 UTCEPSS rescore
- 2026-06-13 23:00 UTCEPSS rescore
- 2026-06-12 23:12 UTCEPSS rescore
- 2026-05-27 20:35 UTCEG score recompute
Frequently asked(5)
What is CVE-2026-45064?
CVE-2026-45064 is a medium vulnerability published on May 27, 2026. Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 6.1.0-BETA1 until 6.4.40, 7.4.12, and 8.0.12, UrlSanitizer::parse() passes Unicode explicit-direction BiDi formatting characters through into sanitized href and src attributes, allowing sanitized…
When was CVE-2026-45064 disclosed?
CVE-2026-45064 was first published in the National Vulnerability Database on May 27, 2026, with the most recent update on July 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45064 actively exploited?
CVE-2026-45064 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 21.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-45064?
CVE-2026-45064 has a CVSS v3 base score of 6.1 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 2.3. The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-45064?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45064, 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
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-45064
Is Your Infrastructure Affected by CVE-2026-45064?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.