CVE-2026-48747
unknown
CVSS v3
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CVSS v4 NEW
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VIR risk
—
Description
CVE-2026-48747: Mailomat Mailer Webhook Parser Reads the HMAC Algorithm from the Request: Signature Algorithm Downgrade
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 0 |
| sid | Fixed | 7.4.13+dfsg-1 |
| forky | Fixed | 7.4.13+dfsg-1 |
| bullseye | Fixed | 0 |
| bookworm | Fixed | 0 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Packagist | symfony/mailomat-mailer | >=7.2.0,<7.3.0|>=7.3.0,<7.4.0|>=7.4.0,<7.4.13|>=8.0.0,<8.0.13 | |
| Packagist | symfony/symfony | >=7.2.0,<7.3.0|>=7.3.0,<7.4.0|>=7.4.0,<7.4.13|>=8.0.0,<8.0.13 | |
References
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.