Threats / Grafana Labs / CVE-2021-43798
CVE-2021-43798
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Grafana Labs vulnerability
Grafana contains a path traversal vulnerability (CWE-22) enabling unauthorized access to local files on affected systems.
Verdict
Today item — known-exploited.
A path traversal flaw in Grafana allows attackers to read arbitrary files from the host filesystem. The vulnerability has been exploited in the wild and carries a high EPSS score of 0.94438, indicating significant real-world attack likelihood.
01
Is it exploitable?
— the evidence, ranked above the scoreExploit available
Fully weaponized — public exploit code is cataloged for this vulnerability.We link the existence of the exploit; we do not host or redistribute payloads.
Reported exploitation
231 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-10-09).
Probability (EPSS)
EPSS 0.88849 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Grafana Labs, Grafana. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-22 Path Traversal — weakness family: Path traversal / file.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft a malicious request using path traversal sequences to escape the intended directory boundaries.
Business
Sensitive configuration files, credentials, and application data become exposed to unauthorized parties.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I retrieve database credentials, API keys, and other secrets stored in accessible files on the server.
Business
Compromised credentials enable lateral movement and compromise of dependent systems and data stores.
3
Lateral reach — past segmentation narrative 3
Attacker
I access system files to enumerate the environment and identify further attack vectors.
Business
Attackers gain intelligence for privilege escalation or targeted exploitation of other vulnerabilities.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05