Symfony
98 CVEs tracked. None of them is in CISA KEV.
This hub aggregates every CVE we track for Symfony, a product in the oss libraries space. Use it to gauge the current risk picture and drill into individual advisories.
Symfony CVEs per month
| Month | CVEs |
|---|---|
| 2024-10 | 0 |
| 2024-11 | 8 |
| 2024-12 | 0 |
| 2025-01 | 0 |
| 2025-02 | 0 |
| 2025-03 | 0 |
| 2025-04 | 0 |
| 2025-05 | 0 |
| 2025-06 | 0 |
| 2025-07 | 0 |
| 2025-08 | 0 |
| 2025-09 | 0 |
| 2025-10 | 0 |
| 2025-11 | 1 |
| 2025-12 | 1 |
| 2026-01 | 1 |
| 2026-02 | 0 |
| 2026-03 | 0 |
| 2026-04 | 0 |
| 2026-05 | 0 |
| 2026-06 | 0 |
| 2026-07 | 29 |
| 2026-08 | 0 |
| 2026-09 | 1 |
Severity
How the 98 CVEs score on CVSS. Severity is not exploitation: KEV is counted above.
- Critical10
- High33
- Medium48
- Low5
Latest CVEs
The 15 most recently published vulnerabilities affecting Symfony.
- CVE-2026-50157Auth0 Symfony: Bearer Token Accepted via URL Query Parameter in Auth0 Symfony SDK6.5
- CVE-2026-48761Symfony: HtmlSanitizer UrlAttributeSanitizer Misses URL Attributes on <object>, <applet>, <iframe>, <img> and the URL Inside <meta http-equiv="refresh"> content6.1
- CVE-2026-48747Symfony: Mailomat Mailer Webhook Parser Reads the HMAC Algorithm from the Request: Signature Algorithm Downgrade5.3
- CVE-2026-48489Symfony: Security Firewall Bypass via failure_forward Subrequest: Unauthenticated Access to access_control-Protected GET Routes7.5
- CVE-2026-48760Symfony: HtmlSanitizer URL Parser Deny Gates Underinclusive: Percent-Encoded BiDi Marks and Unicode Whitespace Bypass Visual-Spoofing Defense6.1
- CVE-2026-48736Symfony: IpUtils::PRIVATE_SUBNETS Omits IPv6 Transition Forms (6to4, NAT64, Teredo, IPv4-compatible): SSRF Bypass in NoPrivateNetworkHttpClient8.6
- CVE-2026-48784Symfony: UrlGenerator Dot-Segment Encoding Skips Every Other Chained `../` or `./` → Generated URL Collapses Off-Route Under RFC 3986 Normalization6.1
- CVE-2026-45068Symfony: Argument Injection in SendmailTransport via Dash-Prefixed Recipient Address7.5
- CVE-2026-47212Symfony: Twilio Notifier Webhook Parser Never Verifies the X-Twilio-Signature HMAC: Unauthenticated Webhook Event Injection5.3
- CVE-2026-45071Symfony: XXE (Local File Disclosure) in DomCrawler::addXmlContent() via validateOnParse = true7.5
- CVE-2026-45755Symfony: Mailtrap Mailer Webhook Parser Never Verifies the X-Mt-Signature HMAC — Unauthenticated Webhook Event Injection5.3
- CVE-2026-45754Symfony: Mailjet Mailer Webhook Parser Never Verifies the Configured Secret — Unauthenticated Webhook Event Injection5.3
- CVE-2026-45305Symfony: YAML Parser ReDoS via Catastrophic Backtracking in Parser::cleanup() Regex7.5
- CVE-2026-45304Symfony: YAML Parser Exponential Memory Allocation via Recursive Collection-Alias Expansion ("Billion Laughs")7.5
- CVE-2026-45069Symfony: OidcTokenHandler Accepts JWTs Missing aud/iss/exp Claims9.1
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