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CVE detail

CVE-2021-40438

A crafted request uri-path can cause mod_proxy to forward the request to an origin server choosen by the remote user. This issue affects Apache HTTP Server 2.4.48 and earlier.

CVSS 9.0 · CriticalBuzz score 62.9KEV listed

Buzz score

Why this CVE is surfacing

Buzz score total 62.9

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 24.9 · diversity 13.0 · KEV 25.0 · OTX 0.0 · PoC 0.0
Mention score
24.9
11 evidence mentions in the snapshot
Diversity score
13.0
4 sources across 2 categories
KEV score
25.0
Known exploited vulnerability present
OTX score
0.0
0 OTX pulses
PoC score
0.0
0 repos · best confidence N/A
Best PoC traction
0
Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions
0
within the 30d window
Peak daily
0
highest bucket

Evidence

Source links by recency

Newest mentions first
11 source links · newest first
  • The cybercrime group ExCobalt targeted Russian organizations in multiple sectors with a previously unknown backdoor known as GoRed. Positive Technologies researchers reported that a cybercrime gang called ExCobalt targeted Russian organizations in multiple sectors with a previously unknown Golang-based backdoor known as GoRed. Members of the ExCobalt group have been active since at least 2016, […]

    newssecurityaffairs.comJun 24, 2024, 7:36 AM
  • The 2022 Unit 42 Network Threat Trends Research Report includes an analysis of the CVEs most commonly exploited in 2021 and predictions for which CVEs attackers will likely focus on in the year to come.

    vendorunit42.paloaltonetworks.comJul 21, 2022, 1:00 PM
  • The Apache Software Foundation released Apache HTTP Server 2.4.52 to address a couple of security flaws that can lead to remote code execution. The Apache Software Foundation has released the Apache HTTP Server 2.4.52 to address a couple of vulnerabilities, tracked as CVE-2021-44790 and CVE-2021-44224, that can lead to remote code execution attacks. The CVE-2021-44790 […]

    newssecurityaffairs.comDec 27, 2021, 6:26 PM
  • High-Risk Flaw Haunts Apache ServerSecurityWeek

    The Apache Software Foundation has released a new version of its flagship web server to patch a pair of security defects, one serious enough to lead to remote code execution attacks.

    newswww.securityweek.comDec 27, 2021, 3:04 PM
  • Network attacks observed August-October 2021 included high levels of cross-site scripting, code execution and directory traversal.

    vendorunit42.paloaltonetworks.comDec 21, 2021, 8:00 PM
  • Security Affairs newsletter Round 343Security Affairs

    A new round of the weekly Security Affairs newsletter arrived! Every week the best security articles from Security Affairs free for you in your email box. If you want to also receive for free the newsletter with the international press subscribe here. Hundreds of vulnerabilities in common Wi-Fi routers affect millions of users German BSI agency […]

    newssecurityaffairs.comDec 5, 2021, 1:05 PM
  • U.S. CISA urges to address vulnerabilities Qualcomm, Mikrotik, Zoho and the Apache Software Foundation software. U.S. Cybersecurity and Infrastructure Security Agency (CISA) has updated its catalog of actively exploited vulnerabilities recommending federal agencies to address the flaws in Qualcomm, Mikrotik, Zoho and the Apache Software Foundation software within specific timeframes and deadlines. CISA also warns of […]

    newssecurityaffairs.comDec 2, 2021, 8:17 PM
  • The U.S. government’s cybersecurity agency has updated its catalog of “known exploited vulnerabilities” and set deadlines for federal agencies to apply fixes for security defects in software made by Qualcomm, Mikrotik, Zoho and the Apache Software Foundation.

    newswww.securityweek.comDec 2, 2021, 6:18 PM
  • Threat actors are exploiting the recently patched CVE-2021-40438 flaw in Apache HTTP servers, warns German Cybersecurity Agency and Cisco. Threat actors are exploiting a recently addressed server-side request forgery (SSRF) vulnerability, tracked as CVE-2021-40438, in Apache HTTP servers. The CVE-2021-40438 flaw can be exploited against httpd web servers that have the mod_proxy module enabled. A threat actor […]

    newssecurityaffairs.comNov 29, 2021, 3:18 PM
  • German Cybersecurity Agency and Cisco Warn of Attacks Targeting Apache HTTP Server Flaw Organizations are being advised to ensure that their Apache HTTP servers are up to date, after it came to light that a recently patched vulnerability has been exploited in attacks.

    newswww.securityweek.comNov 29, 2021, 12:10 PM
  • 18th October – Threat Intelligence ReportCheck Point Research

    For the latest discoveries in cyber research for the week of 18th October, please download our Threat Intelligence Bulletin. Top Attacks and Breaches Israeli Medical Center Hillel Yaffe has been targeted by ransomware affecting the hospital’s computer systems, which have been working in a limited capacity since the attack occurred. Russia-based group TA505 is running […]

    vendorresearch.checkpoint.comOct 18, 2021, 3:53 PM

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

0 repository references · best confidence N/A · max 0 stars
No public PoC repositories have been matched yet.

Related records

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