CVE-2020-13845: sylabs singularity
Vulnerability summary
CVE-2020-13845 is a high (CVSS 7.5) vulnerability in sylabs singularity. EPSS estimates a 0.52% chance of exploitation in the next 30 days, higher than 44% of scored vulnerabilities.
Severe, CVSS 7.5 (NVD); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 4 · Related 4Timeline
- 14-07-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
Sylabs Singularity 3.0 through 3.5 has Improper Validation of an Integrity Check Value. Image integrity is not validated when an ECL policy is enforced. The fingerprint required by the ECL is compared against the signature object descriptor(s) in the SIF file, rather than to a cryptographically validated signature.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- OSV · GoEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- OSV · AlpineEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS trend
Probability
0.52%
Chance of exploitation in the next 30 days
Percentile
44%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.52% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-347Improper Verification of Cryptographic SignatureThe product does not verify, or incorrectly verifies, the cryptographic signature for data.
- CWE-354Improper Validation of Integrity Check ValueThe product does not validate or incorrectly validates the integrity check values or "checksums" of a message.
Affected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Alpine1 product
- singularity≥ 3.0.0, < 3.6.0-r0
Github.com/sylabs1 product
- singularity≥ 3.0.0, < 3.6.0
Sylabs1 product
- singularity≥ 3.0.0, ≤ 3.5.0
Ubuntu1 product
- singularity-containerAll versions (No fix recorded)
4 vendors · 4 products
References
9 links- github.com/hpcng/singularity/security/advisories/GHSA-pmfr-63c2-jr5cX Refsource MISCREPORTWEBThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-07/msg00046.htmlVendor AdvisoryX Refsource SUSEWEBBroken Link
- lists.opensuse.org/opensuse-security-announce/2020-07/msg00059.htmlVendor AdvisoryX Refsource SUSEWEBBroken Link
- lists.opensuse.org/opensuse-security-announce/2020-09/msg00053.htmlVendor AdvisoryX Refsource SUSEWEBBroken Link
