CISA Drops RSS Feed for KEV Alerts, Moves to Email and Twitter (X)

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The Cybersecurity and Infrastructure Security Agency (CISA) has announced the discontinuation of its RSS feed for Known Exploited Vulnerabilities (KEV) alerts, shifting notifications to email and Twitter (X). This decision has sparked criticism due to the lack of prior notice and concerns over reliance on a third-party platform (X) for critical security updates.

Official Sources:

You Should Know:

  1. How to Monitor CISA KEV Alerts Without RSS
    Since CISA no longer supports RSS, security teams must adapt:

Option 1: Email Subscriptions

  • Ensure your organization is subscribed to CISA’s mailing list.
  • Use automated email filters to categorize KEV alerts (e.g., [email protected]).

Option 2: Twitter (X) Monitoring

  • Use `curl` to fetch CISA’s X posts: 
    curl -s "https://api.twitter.com/1.1/statuses/user_timeline.json?screen_name=CISAgov&count=5" | jq '.[].text'
  • Alternatively, use a Python script with Tweepy: 
    import tweepy
auth = tweepy.OAuth1UserHandler(consumer_key, consumer_secret, access_token, access_token_secret)
api = tweepy.API(auth)
tweets = api.user_timeline(screen_name="CISAgov", count=10)
for tweet in tweets:
if "KEV" in tweet.text:
print(tweet.text)

Option 3: Web Scraping as a Fallback

  • Use `wget` or `curl` to check CISA’s KEV catalog: 
    wget -qO- https://www.cisa.gov/known-exploited-vulnerabilities-catalog | grep -A 5 "CVE-"

2. Automating KEV Alerts with Linux Commands

To ensure real-time monitoring, set up a cron job: 

!/bin/bash
 Check CISA’s KEV page every hour
curl -s https://www.cisa.gov/known-exploited-vulnerabilities-catalog > kev.html
if grep -q "NEW_CVE_PATTERN" kev.html; then
echo "New KEV Alert!" | mail -s "CISA KEV Update" [email protected]
fi

3. Cloudflare Protection & DDoS Risks

CISA claims improved Cloudflare defenses, but you should verify: 

 Test Cloudflare security headers
curl -I https://www.cisa.gov | grep -i "cloudflare"

If Cloudflare is active, expect headers like:

[/bash]

CF-Cache-Status: HIT

CF-RAY: xxxxxxx-XXX

[bash]

What Undercode Say
CISA’s abrupt RSS shutdown creates operational hurdles. Security teams must now rely on less reliable methods (X, email delays). Proactive measures like web scraping, API polling, and automation are necessary.

Expected Commands Summary:
– Email Filtering: `grep [email protected] /var/mail/security`
– X (Twitter) Monitoring: `tweepy` or `curl` + `jq`
– KEV Web Scraping: `wget + grep “CVE-“`
– Cloudflare Check: `curl -I` for security headers

Prediction
CISA may reintroduce RSS or an API due to backlash. Meanwhile, expect third-party tools to emerge for KEV alert aggregation.

Expected Output:
Automated KEV monitoring scripts with email/X integration.

References:

Reported By: Mthomasson This – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅

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