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CVE-2020-17520

18
FAUCET Score

CVE-2020-17520 describes a vulnerability in Apache Pulsar Manager version 0.1.0, allowing authenticated attackers to bypass administrative permission checks. By crafting specific URLs, an attacker can access any HTTP API, potentially leading to unauthorized information disclosure. Rated as Medium severity (CVSS 6.5), this vulnerability requires low attack complexity and no user interaction, but does necessitate prior authentication. While no active exploitation, public exploit code, or significant community discussion has been observed, the potential for high confidentiality impact remains.

Impacted Technologies

VendorProductVersion(s)CPE
0.1.0CPE matchmatch criteria
cpe:2.3:a:apache:pulsar_manager:0.1.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.34%
Probability of exploitation in next 30 days
EPSS Percentile
68.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0134 is in the 82nd percentile among its peer group of 21,958 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2020-17520Important

apache-pulsar: information disclosure via special URLs

Dec 17, 2020

References

lists.apache.org / thread.html/rb8b3025f8b507dec0b66791df408cdaf2d155866db1c7a1a4bc621cd%40%3Cdev.pulsar.apache.org%3E
Mailing ListVendor Advisory