
Adventurer. Takes a lot of photos, calls many places home. Research VP @VulnCheckAI. Previously @Rapid7 / @metasploit. Opinions mine. She/her.
Boston, MA
Joined October 2010
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Announcing Initial Access community edition: A free, open-source repo of @VulnCheckAI-authored initial access exploits, each of which comes with a PCAP, target Docker container, and Snort/Suricata rules.
New additions every Monday, contributions welcome: vulncheck.com/blog/initial-a…
Caitlin Condon retweeted
AI is making vulnerabilities easier to find. Who’s going to fix them?
VulnCheck’s Josh Bressers joined @CyberScoop’s Safe Mode podcast to discuss AI-generated reports, the pressure on open-source maintainers and the human work behind fixes.
Listen: cyberscoop.com/radio/how-vul…
Caitlin Condon retweeted
VulnCheck Initial Access Intelligence has surpassed 1,000 exploits.
To mark the milestone, we’re opening Initial Access Community with 40 free exploits, detection rules and testing artifacts. New additions every Monday.
Learn more: vulncheck.com/blog/initial-a…
Caitlin Condon retweeted
again vulncheck setting the bar up in the sky!! this is something I believe the industry needed for a long time.
that is shouldn't be lost in the timeline 🔥🔥🔥
Announcing Initial Access community edition: A free, open-source repo of @VulnCheckAI-authored initial access exploits, each of which comes with a PCAP, target Docker container, and Snort/Suricata rules.
New additions every Monday, contributions welcome: vulncheck.com/blog/initial-a…
Caitlin Condon retweeted
One thing we do well at @VulnCheckAI is develop exploits and associated detections. We’ve wanted to share more of this work with the security community for a long time, and we’re finally making it happen.
New exploits every Monday. Pull requests welcome!
github.com/vulncheck-oss/ini…
If you’re headed to #BSidesNOVA this weekend, @Junior_Baines is talking about Chinese implants in the supply chain on 10/31! Jake computers real good, you won’t wanna miss it 🎉
bsidesnova-2026.sessionize.c…
Caitlin Condon retweeted
I had a minute over the weekend to look at dropped binaries in Canary Intelligence. There were a bunch of neat ones, but I picked just one to write up. An attacker originating from Japan went after one of our canaries affected by CVE-2026-42589.
vulncheck.com/blog/cache-me-…
Our team got code execution working in on PHP 8.2 and 8.3 today, which rounds out our testing across supported version streams. There won’t be a universal exploit, but exploitability for RCE with ASLR is definitely possible across the affected version range.
Caitlin Condon retweeted
Sorry folks, we have a confirmed PHP compromise with post-exploit activity. Still not the widespread outbreak we all braced for, but it’s actively exploited in the wild. Updated threat brief:
unit42.paloaltonetworks.com/…
Did I mention they also shipped 100+ exploits this week, including a new MikroTik disclosure and an original exploit for Citrix NetScaler CVE-2026-107406?
docs.vulncheck.com/initial-a…
Our team's (private) #php2shell exploit now supports:
- PHP 8.4.10 - 8.4.26 on AMD64 + ARM64 with ASLR
- PHP 8.5.10 and 8.5.11 on AMD64 + ARM64 with ASLR
* WordPress exploitation on default Docker installs running the above versions of PHP
vulncheck.com/blog/php2shell…
Our team's (private) #php2shell exploit now supports:
- PHP 8.4.10 - 8.4.26 on AMD64 + ARM64 with ASLR
- PHP 8.5.10 and 8.5.11 on AMD64 + ARM64 with ASLR
* WordPress exploitation on default Docker installs running the above versions of PHP
vulncheck.com/blog/php2shell…
Thx for the messages fam, but @VulnCheckAI already had an RCE exploit that bypassed ASLR. I just wanted the TAs to give us *tHe gOoD sHiT* so we could catalog all their techniques :)
Caitlin Condon retweeted
So basically, today PHP got two critical bugs that let anyone run code on your server without even logging in, which is bad, and then the details leaked before the patch was even out, which is worse, and it works on WordPress and MediaWiki and Magento and Joomla and Laravel, and Censys says like 1.5 million servers are running a version with no fix, so the NSA was like "take your system offline," and the FBI was like "take your system offline," and CISA and the UK and CERT-EU were all like "take your system offline," and then the Prime Minister of Japan, the actual Prime Minister, posted at 5:55 in the morning telling 48.8 million people to take their system offline, so everyone took their system offline, like the Dutch cybersecurity agency took its own website offline, and the Dutch parliament went offline, and the Port of Rotterdam went offline, and Finland and France and Denmark started pulling government sites, and Wikipedia went down, and Archive.org went down, and Asana and GOG and Something Awful went down, and the University of Vienna's webmail went down for some reason, and that's just PHP. Because GitLab also dropped a CVSS 10.0, which is the highest score they give out, for a bug that's been there since 2014, so that's every self-hosted GitLab for twelve years, and then LiteLLM 1.107.0 got hijacked and shipped a credential stealer and a remote access trojan in every single wheel and the Docker images, including latest, and you didn't even have to import it, just installing it was enough, and it's the second time this year, and then Railway paused every deployment on the entire platform because someone got into the environment variables, so now everyone has to rotate every secret they've ever stored there, and TiDB Cloud said someone was walking around inside with stolen credentials for basically a month and an extortion group says they took 10.6 terabytes, and Zeabur got breached for the second time in two months and is just shutting down, like the whole company, and Node.js patched remote code execution and a TLS bypass, and CISA says Plex is being actively exploited, and someone took over 300 Tor exit relays to steal SSH passwords, and SafePay ransomware has hit over 600 critical infrastructure orgs, and India's biggest bank filed a data loss incident, and Japan has been in an official state of emergency in cyberspace since October 9, which honestly explains the 5:55 AM post. Oh, and eMudhra, a certificate authority that's issued over 60 million certificates, whose entire job is proving websites are who they say they are, was supposed to be using private keys that are random numbers over a hundred digits long, and one of them was 4. Just 4. And the others were like 66 and 237. Anyway, it's Wednesday.
lots of public poc being thrown, but no aslr bypasses. please, TAs, give us *tHe gOoD sHiT*
PHP2Shell leaks sparked a scramble for answers.
VulnCheck reproduced what we believe are both flaws Oct. 20 and has monitored activity since, observing a failed webshell attempt from a China-based IP.
Research, IOCs and guidance. More updates to come: vulncheck.com/blog/php2shell…
















