CVE-2026-18772

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 81% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Improperly controlled sequential memory allocation vulnerability in Samsung Open Source rlottie allows Exponential Data Expansion.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
19%
KEV
Not listed

Published

August 4, 2026

Last Modified

August 18, 2026

Advisory Details (1)

Auto-updated Aug 4, 2026
Upstream fix merged — awaiting tagged release. Sources: github_pr.
github_pr

Safety limits to precomp, repeater, and polystar handling

Fix merged in Samsung/rlottie PR #596 on 2026-07-22 — awaiting tagged release

https://github.com/Samsung/rlottie/pull/596

Vendor Advisories for CVE-2026-18772(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
rlottie0.1+dfsg-2 ... 0.1+dfsg-5 (9 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
rlottie0.1+dfsg-4 ... 0.1+dfsg-5 (7 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
rlottie0.1+dfsg-4.2, 0.1+dfsg-4.2+deb13u1, 0.1+dfsg-4.2+deb13u2, 0.1+dfsg-4.3, 0.1+dfsg-5——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
rlottie0.1+dfsg-4.2, 0.1+dfsg-4.3, 0.1+dfsg-5——

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 22× in last 7d / 57× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-20 22:55 UTCEPSS rescore
  2. 2026-08-20 16:50 UTCEG score recompute
  3. 2026-08-20 16:50 UTCGHSA enrichment
  4. 2026-08-19 17:03 UTCEPSS rescore
  5. 2026-08-19 16:19 UTCGHSA enrichment
  6. 2026-08-18 15:34 UTCEG score recompute
  7. 2026-08-18 15:34 UTCGHSA enrichment
  8. 2026-08-18 13:48 UTCEPSS rescore
  9. 2026-08-18 03:32 UTCEG score recompute
  10. 2026-08-18 03:32 UTCGHSA enrichment
  11. 2026-08-17 13:47 UTCEPSS rescore
  12. 2026-08-17 03:03 UTCEG score recompute
  13. 2026-08-17 03:03 UTCGHSA enrichment
  14. 2026-08-16 14:56 UTCEPSS rescore
  15. 2026-08-16 02:34 UTCEG score recompute
  16. 2026-08-16 02:34 UTCGHSA enrichment
  17. 2026-08-16 02:14 UTCEPSS rescore
  18. 2026-08-15 02:05 UTCEG score recompute
  19. 2026-08-15 02:05 UTCGHSA enrichment
  20. 2026-08-15 01:30 UTCEPSS rescore
  21. 2026-08-14 01:37 UTCEG score recompute
  22. 2026-08-14 01:37 UTCGHSA enrichment
  23. 2026-08-13 22:00 UTCEPSS rescore
  24. 2026-08-13 01:09 UTCEG score recompute
  25. 2026-08-13 01:09 UTCGHSA enrichment
Show 32 more
  1. 2026-08-12 13:50 UTCEPSS rescore
  2. 2026-08-12 00:40 UTCEG score recompute
  3. 2026-08-12 00:40 UTCGHSA enrichment
  4. 2026-08-11 13:42 UTCEPSS rescore
  5. 2026-08-11 05:24 UTCEG score recompute
  6. 2026-08-11 05:23 UTCGHSA enrichment
  7. 2026-08-11 05:08 UTCEG score recompute▲ 1.00
  8. 2026-08-11 05:08 UTCGHSA enrichment
  9. 2026-08-11 05:08 UTCMITRE cvelistV5CVSS v3 → 6.5
  10. 2026-08-11 00:00 UTCEPSS rescore
  11. 2026-08-10 17:09 UTCGHSA enrichment
  12. 2026-08-09 16:40 UTCEG score recompute
  13. 2026-08-09 16:40 UTCGHSA enrichment
  14. 2026-08-09 13:46 UTCEPSS rescore
  15. 2026-08-08 16:37 UTCEPSS rescore
  16. 2026-08-08 16:12 UTCEG score recompute
  17. 2026-08-08 16:12 UTCGHSA enrichment
  18. 2026-08-07 15:43 UTCGHSA enrichment
  19. 2026-08-06 15:15 UTCEG score recompute
  20. 2026-08-06 15:15 UTCGHSA enrichment
  21. 2026-08-06 13:46 UTCEPSS rescore
  22. 2026-08-05 19:17 UTCEPSS rescore
  23. 2026-08-05 14:46 UTCEG score recompute
  24. 2026-08-05 14:46 UTCGHSA enrichment
  25. 2026-08-04 15:10 UTCEPSS rescore
  26. 2026-08-04 14:18 UTCEG score recompute
  27. 2026-08-04 14:18 UTCGHSA enrichment
  28. 2026-08-04 13:59 UTCEG score recompute
  29. 2026-08-04 13:59 UTCGHSA enrichment
  30. 2026-08-04 10:31 UTCEG score recompute
  31. 2026-08-04 09:21 UTCEG score recompute
  32. 2026-08-04 09:20 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-18772?
CVE-2026-18772 is a medium vulnerability published on August 4, 2026. Improperly controlled sequential memory allocation vulnerability in Samsung Open Source rlottie allows Exponential Data Expansion.
When was CVE-2026-18772 disclosed?
CVE-2026-18772 was first published in the National Vulnerability Database on August 4, 2026, with the most recent update on August 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-18772 actively exploited?
CVE-2026-18772 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 80.6% of all scored CVEs.
What is the CVSS score of CVE-2026-18772?
CVE-2026-18772 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-18772?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-18772, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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