Lead · Vulnerabilities
The deadline was Thursday. It is Thursday.
CISA put the two PHP2Shell use-after-free flaws on the exploited list and ordered federal agencies to patch by today, while one suspected China-nexus operator has already rooted 25 servers and reached a US government-affiliated network.
CVE-2026-109618 and CVE-2026-109619 are both rated 9.2, both sit in the PHP engine's session.upload_progress handling, and both trigger during multipart request processing, which is to say during the ordinary act of someone uploading a file to a website. CISA confirmed active exploitation, added them to the Known Exploited Vulnerabilities catalog, and gave federal agencies until Thursday. You are reading this on Thursday.
The exploitation is not theoretical, but it is also not uniform. On 25 October, researchers observed what they describe as an AI-assisted attack by a suspected China-nexus actor that rooted 25 servers and breached a US government-affiliated network, chaining PHP2Shell with a second exploit called Fragnesia to get root on firewalls, taking two servers at that one organisation. Separately, an exposed staging server at 96.126.130.81 showed an operator who spent 9 to 11 October extorting Japanese real-estate websites and then picked up PHP2Shell tooling, because the tooling was lying there. Wiz, who have been watching since public disclosure on 21 October, say they have seen attempts but no successful attacks in their own telemetry.
And on Mastodon yesterday morning, a working malware analyst asked, in public, whether in-the-wild exploitation of PHP2Shell had actually been confirmed yet, because she had heard conflicting things. She is right to ask and the vendors are right to report. Both of those sentences are true at once, which is the normal condition of a Thursday. Meanwhile an infrastructure report notes the flaws reach the web management interfaces of firewalls, VPNs and application delivery controllers, which is where you put the thing that is not supposed to be reachable.
Why it mattersIf PHP is reachable from a management interface anywhere in your estate, the window for discovering that closed before the coffee did.
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