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CVE-2025-49630 is a reachable assertion vulnerability in Apache HTTP Server mod_proxy_http2 affecting versions 2.4.26 through 2.4.63. An untrusted client can send requests that trigger an assertion when Apache is configured as a reverse proxy to an HTTP/2 backend with ProxyPreserveHost enabled. Triggering the assertion causes a denial-of-service condition.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
15 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A CVE referenced by an AlmaLinux 9.2 local security-check plugin. No technical impact, exploit status, affected component, or remediation details are provided in the content.
A vulnerability referenced by a TuxCare CentOS 8 local security-check plugin.
A vulnerability referenced by a CentOS local security advisory; no technical vulnerability description is provided in the content.
A vulnerability referenced by the Alma Linux 9.2 TuxCare security update.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.