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CVE-2020-13845

19
FAUCET Score

CVE-2020-13845 affects Sylabs Singularity versions 3.0 through 3.5, stemming from an improper validation of integrity check values within SIF files. This vulnerability, rated 7.5 HIGH, allows an unauthenticated attacker to remotely compromise image integrity by bypassing the expected cryptographic signature validation. While no active exploitation, public exploit code, or significant community discussion has been observed, the high impact on integrity warrants attention.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.0.0, <= 3.5.0CPE matchmatch criteria
cpe:2.3:a:sylabs:singularity:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.52%
Probability of exploitation in next 30 days
EPSS Percentile
40.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0052 is in the 19th percentile among its peer group of 51,551 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, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

gopatch availablevia ghsa
Product: github.com/sylabs/singularityFixed in: 3.6.0

Vendor Advisories (1)

goGHSA-pmfr-63c2-jr5chigh

Execution Control List (ECL) Is Insecure in Singularity

Dec 20, 2021

References

lists.opensuse.org / opensuse-security-announce/2020-07/msg00046.html
Broken Link
lists.opensuse.org / opensuse-security-announce/2020-07/msg00059.html
Broken Link
lists.opensuse.org / opensuse-security-announce/2020-09/msg00053.html
Broken Link
github.com / hpcng/singularity/security/advisories/GHSA-pmfr-63c2-jr5c
Third Party Advisory
medium.com / sylabs
Third Party Advisory